After finding out that she is a male stripper's "rock bottom," Dee sets out to prove that she is the best thing that ever happened to him; Dennis takes over for a stripper; Mac and Frank play a war game.

Customers pack Paddy's on Valentine's Day; Dennis implores the gang to do one day of actual work, but a mystery crate that Cricket spots in the alley distracts everyone.

A typical day in Cricket's world ends with possible redemption when his family intervenes, setting up a chance to move on from the gang, find love and reemerge as Matthew Mara once again.

Dennis reveals that he has a baby from his layover time in North Dakota and everyone offers solutions to the problem, but in the end, Dennis must decide which life to continue to lead.

Cindy, the new female member of the gang, successfully pulls off scams; everything works until Mac introduces a lifelike sex doll that looks exactly like Dennis.

To boost productivity, Dee hires an at-home "Escape Room Experience" service to come to Dennis and Mac's apartment.

Depraved underachieving might look easy, but for the egocentric Mac, Charlie, Dennis, Frank and Dee, it's an art form; "It's Always Sunny in Philadelphia" follows "The Gang," the owners of the unsuccessful Paddy's Pub; a group of degenerates who loves nothing more than to scheme, conspire, and mostly revel in each other's misery; whether gaming the welfare system, exploiting dumpster babies, pretending to be crippled, impersonating officers or faking funerals, The Gang never stoops too low in the name of making a buck.

Depraved underachieving might look easy, but for the egocentric Mac, Charlie, Dennis, Frank and Dee, it's an art form; "It's Always Sunny in Philadelphia" follows "The Gang," the owners of the unsuccessful Paddy's Pub; a group of degenerates who loves nothing more than to scheme, conspire, and mostly revel in each other's misery; whether gaming the welfare system, exploiting dumpster babies, pretending to be crippled, impersonating officers or faking funerals, The Gang never stoops too low in the name of making a buck.

Depraved underachieving might look easy, but for the egocentric Mac, Charlie, Dennis, Frank and Dee, it's an art form; "It's Always Sunny in Philadelphia" follows "The Gang," the owners of the unsuccessful Paddy's Pub; a group of degenerates who loves nothing more than to scheme, conspire, and mostly revel in each other's misery; whether gaming the welfare system, exploiting dumpster babies, pretending to be crippled, impersonating officers or faking funerals, The Gang never stoops too low in the name of making a buck.

The entire precinct attends a funeral in Los Angeles; Jake must get Holt back to New York in time to interview for a job as Chief Commissioner of the NYPD; Amy is forced to stay with some estranged members of the Boyle family.

Seamus Murphy returns to redeem the favor Holt owes him; the precinct looks for loophole that will allow Holt to uphold his end of the bargain without breaking the law.

Charlie and Rex reveal a conspiracy within the parkour community, after a thrill-seeker falls to his death.

When a controversial university professor is found dead in his classroom, Charlie and Rex investigate leads; Jesse goes undercover and soon finds himself in danger.

A professional pet sitter is killed by a tree while looking after a tiny dog; Hudson and Rex take the case and discover everything from blackmail to a foot fetish; Charlie needs Sarah's help.

Charlie learns about a string of recent murders at his aunt's retirement home.

When a controversial university professor is found dead in his classroom, Charlie and Rex investigate leads; Jesse goes undercover and soon finds himself in danger.

A professional pet sitter is killed by a tree while looking after a tiny dog; Hudson and Rex take the case and discover everything from blackmail to a foot fetish; Charlie needs Sarah's help.

Charlie learns about a string of recent murders at his aunt's retirement home.

When a controversial university professor is found dead in his classroom, Charlie and Rex investigate leads; Jesse goes undercover and soon finds himself in danger.

After Seamus threatens Kevin, Holt devises an elaborate plan to hide him in a safe house, using Jake as his guard; Kevin is miserable as the 99 works overtime to find Seamus and take him down.

When Jake is asked to negotiate a hostage situation with a jewel thief, he learns that the culprit seems to be a familiar face; Gina and Amy help Charles manage the high demands of his food truck.

An Indianapolis talk show host asks to interview Leslie; April and Ron help ready Andy for his final exam.

Leslie takes action when she learns the Parks Department budget is about to be cut; Chris takes Ron to a meditation center.

Liz tries to stop the staff from ruining her chances at adopting a child when an adoption agent (Megan Mullally) makes a visit to the set; Jack returns from D.C. with a plan to reclaim his position from Devin Banks (Will Arnett).

Liz and Jenna's friend Claire (Jennifer Aniston) visits and falls for Jack; Tracy tries to cheer up Kenneth by turning one of his dreams into a reality.

The Dunphy house is bursting at the seams when Dylan's hippie mom moves in and Claire's lonely stepdad, Jerry, wants to pay them a visit; Jay and Gloria attempt to help Manny get over his big breakup with Sherry.

Mitchell suspects Cameron has an ulterior motive for keeping everyone happy for Christmas dinner; Claire tries to dodge Jay's job offer to work at his dog bed company; Luke has to deal with the consequences of kissing Manny's ex-girlfriend Sherri.

Alex's company puts her up at a new luxury apartment building with a number of high-profile residents that the family is eager to take advantage of; Phil is on a mission to review the restaurant's famous sliders for his food blog.

Phil pays a visit to his dad after hearing some concerning news about him; Jay gives Claire and Mitch a bunch of their old childhood memorabilia that triggers them to reevaluate a long-held story about their first family vacation.

Mitchell learns a valuable life lesson when a former resident of the house shows up unexpectedly; the Dunphys' old neighbor-turned-tech-titan, Kenneth, comes to visit with a big surprise for Phil; Manny's dad has a big opportunity for his son.

The Pritchett-Dunphy-Tucker clan heads to Paris so Jay can accept a lifetime achievement award for his work in the closet industry; Claire has a secret rendezvous; Cam finally gets a chance to perform as Fizbo on the streets of Paris.

Shocking information threatens Jack Dayton's surgery and the future of OR 2.0; Archer goes rogue to save a patient in need; Maggie questions her future at Med.

Brett waits for life-changing news; Herrmann encounters a psychic with a grave warning on a call; Kidd finds a new lead on the Homeland Security case.

When a convicted murderer hijacks a prison van, the team scrambles to find him and the abducted prison guard before it's too late; Burgess questions Ruzek's motives in a case, creating tension between the two.

Jimmy Buffett is in town and the positive vibes are alive at the bar; when Mac comes out of the women's bathroom, no one can leave until the bathroom situation is solved.

With nothing to do while their phones update to the latest software, the gang decides to reminisce on old times; as everyone misremembers events from their past, the gang's current reality becomes altered.

The weekend of Super Bowl LII from Charlie's perspective; while Charlie searches the back office, Cricket steals the suit leaving Charlie home alone to defend himself.

In the most important weekend of their lives, Frank treats the gang and a crew of their ragtag hangers-on with tickets to see the Eagles in the Super Bowl.

Frank tries to recruit Mac for the gang's float for the Gay Pride Parade; Frank comes to the realization that Mac will never be secure with his sexual identity unless he comes out to his father.

Mac concocts a scheme to attract single women to rent Dennis' bedroom while Frank and Charlie make similar plans to draw in young, European coeds, but neither ad attracts their intended target.

Landing in the middle of a focus group after a screening of "Thunder Gun 4: Maximum Cool," the gang is determined to restore glory and traditional American values back into the franchise, even if it involves sabotage.

Annoyed that the gang failed to react as he nearly choked to death on an appetizer, Frank decides the waiter, his savior, is the only person who has his back.

During their trip to the Philadelphia Zoo, Mac sets up a text group chain for the gang, but confusion sets in and the gang must learn from the meerkats on how to communicate properly in a group.

In the black-and-white noir world of his memory, Charlie navigates the seedy underbelly of Philadelphia when Frank is "diarrhea poisoned," and it's up to Charlie to clean up the mess.

As a record-breaking heat wave overtakes Philly, the gang plans to profit from global warming by pumping up the A/C so people will congregate at Paddy's and save energy at home.

Trapped inside Paddy's with a suicidal jumper on the roof, the gang wonders if it should bother intervening.

Jake surprises Amy with an investigation into arson cases connected to her favorite crossword puzzle author; Gina helps Holt jazz up his commissioner candidate speech; Terry, Rosa, Hitchcock and Scully argue over who deserves the new detective car.

Jake and Charles get tied up in a pyramid scheme and must find a way to sever their contracts.

A professional pet sitter is killed by a tree while looking after a tiny dog; Hudson and Rex take the case and discover everything from blackmail to a foot fetish; Charlie needs Sarah's help.

Sarah winds up in a hostage situation at a medical testing lab; the team and Charlie sends Rex in to help.

After a hated restaurateur's food truck explodes, Charlie and Rex find themselves with a few too many suspects.

Charlie investigates the host of a morning show after her media mogul husband is found dead.

Sarah winds up in a hostage situation at a medical testing lab; the team and Charlie sends Rex in to help.

After a hated restaurateur's food truck explodes, Charlie and Rex find themselves with a few too many suspects.

Charlie investigates the host of a morning show after her media mogul husband is found dead.

Sarah winds up in a hostage situation at a medical testing lab; the team and Charlie sends Rex in to help.

Capt. Holt skips the opera to help Jake with an all-night interrogation in an effort to elicit a confession out of a suspect.

When a fire destroys Charles' food truck, Pimento unexpectedly shows up to the scene as the insurance agent; Rosa helps Amy to see that it's okay to get excited about picking her wedding dress; Gina and Terry coach Holt in the art of social media.

Leslie faces Bobby Newport in a televised debate; Ann, Tom and Chris man the media spin room; Ron works to save a party for Leslie's donors.

An important person in Pawnee dies while Leslie is on a bus tour for the final day of her campaign; Andy investigates a security threat; Chris finds a cure for his depression.

Gavin Volure, an eccentric businessman, invites Jack and Liz to a dinner party at his mansion; Tracy thinks his kids are being too nice to him and fears for his life.

Liz is opposed to going to her high school reunion, but Jack manages to convince her otherwise; Don Geiss wakes up from his coma only to shock Jack with his declaration about who will be GE's CEO; shaken, Jack decides to get away to blow off steam.

Phil and Claire take Haley and Dylan to dinner to reassure them they are not bad parents; Mitch and Cam chaperone on Lily's first date; Jay and Gloria attend Joe's school play.

Claire lands an interview for her dream job but is thwarted on her way to the interview by Phil's tricky staircase; Cam and Mitch debate the pros and cons of adopting another baby.

Mitchell is having a hard time letting go of his old life and Gloria steps in to help him say goodbye; Haley, Luke and Alex decide to throw a party at the Dunphy house when Claire and Phil leave for a trip; Dylan's mom takes the twins for the night.

Mitchell and Cam settle into their new normal; Phil and Claire decide that one of the kids needs to move out; as Gloria becomes more successful at work, she notices Jay and the kids don't seem to need her as much.

The family struggles with goodbyes.

Jay has grown children, grandchildren and a gorgeous young wife, who has a preteen son of her own; all together they must bridge generational, cultural and social gaps.

When the E.D. is flooded with patients from a crash, the entire team is pulled in to help; Charles can't shake the feeling that he knows the new E.D. attending; Archer has second thoughts on the eve of his kidney transplant.

Firehouse 51 is forced to share space with Firehouse 17; Kidd and Herrmann fight over Ritter; an arson case tests Kidd and Severide's relationship; Firehouse 51 says goodbye to one of its own.

The team investigates a string of brutal pharmacy robberies, and Halstead connects with one of the victims about their Army careers; Upton suspects there is more to the story and confides in Voight.

When a trendy new hair salon opens up next door to Paddy's, Dennis and Frank go on the offensive to stop women from cutting off their hair; Mac reunites with his childhood dog, Poppins.

Dennis and Charlie stand guard at the entrance to their laser tag base waiting to ambush the legendary "Big Mo," but Dennis begins to ponder the reasons they play laser tag and if their pursuit of a victory is worth their effort.

Dennis and Dee explore their new accommodations in the countryside; Frank accompanies Charlie to find the truth about Charlie's Irish childhood pen pal; Mac has an identity crisis and decides to join the seminary.

Mac spends a day at the seminary to truly understand what it takes to become a priest; Dennis and Frank plan an elaborate trap to humiliate Charlie's pen pal; Dee prepares for a date with an Irish doctor; Charlie bonds with his pen pal.

The Gang attempts to ascend a mountain in order for Charlie to fulfill an old and mysterious Irish burial tradition; one by one, the Gang backs out until Charlie is left to honor the dead body alone.

Frank, Mac and Dennis try their hand at real estate; Dee arranges to be a surrogate mother to a wealthy couple; Charlie faces off with a lawyer.

Dennis, Mac and Frank plan a trip to see the Grand Canyon; Dee and her small bladder crash the party; Charlie shows up despite his fear of leaving the state.

Mac and Dennis try to keep the bar afloat in the tough economic times; Frank starts a family business with Dee; newly poor people gather outside the bar.

Dee, Dennis and Charlie plan an intervention for Frank; Mac and Frank are both interested in Aunt Donna.

The waitress is getting married, Dee is jealous that she's beating her to the altar, so she tries to derail the wedding.

The gang describes the trials and tribulations experienced during Game Five of the World Series in hopes the judge will clear them of all the citations received.

The gang decides to put on a wrestling show for the returning troops; Dee is surprised when the soldier she's been chatting with online is not how she expected.

Jake invites his newly discovered half sister to stay with him but realizes she's a nightmare and must find a way to get her back home.

Charles plans an elaborate scavenger hunt for Jake's bachelor party, but the day goes awry when the guys decide to take some shortcuts; the ladies realize Amy previously slept with a member of her soon-to-be wedding band.

After a hated restaurateur's food truck explodes, Charlie and Rex find themselves with a few too many suspects.

With a gallery curator found murdered on his showroom floor and a missing sculpture, Charlie, Rex and Sarah are thrown into the world of high art.

When an activist is killed during a break-in at a water bottling plant, the evidence seems to point toward his partner-in-crime.

When Donovan ́s ex, a recovering addict, wakes up with blood on her hands and a dead roommate in her apartment, the team moves quickly, finding there ́s more to the story.

With a gallery curator found murdered on his showroom floor and a missing sculpture, Charlie, Rex and Sarah are thrown into the world of high art.

When an activist is killed during a break-in at a water bottling plant, the evidence seems to point toward his partner-in-crime.

When Donovan ́s ex, a recovering addict, wakes up with blood on her hands and a dead roommate in her apartment, the team moves quickly, finding there ́s more to the story.

With a gallery curator found murdered on his showroom floor and a missing sculpture, Charlie, Rex and Sarah are thrown into the world of high art.

Rosa responds to an active shooter alert; the rest of the squad is forced to stay back; Jake frantically brainstorms ways to offer his assistance; Terry faces an existential crisis; Gina and Amy try to be useful by fixing Rosa's broken toilet.

Rosa and Amy team up to take down a ruthless killer who has managed to elude them for seven years; Terry helps Jake tackle his wedding planning chores; Holt and his rival try to convince each other to step down in the campaign for commissioner.

Leslie and Bobby Newport (Paul Rudd) are separated by a miniscule margin on Election Day; as everyone waits for election results, they ponder the future.

Leslie is overwhelmed when she and Andy visit Ben and April in Washington, D.C.; Ron throws a barbecue for the whole staff.

Jenna fears that Liz's attraction to a new guy (Peter Dinklage) is related to her desire for a baby; Jack helps Tracy and his wife (Sherri Shepherd) arrange a "post-nup.".

While flu spreads quickly among the cast and crew, Jack is selective about who receives vaccinations from Dr. Spaceman (Chris Parnell).

Phil is determined to help Luke prove he is responsible enough to have a new bike; Jay and Manny have some father and son time.

Jay reluctantly takes Phil on a model-airplane excursion, and Gloria goes shopping with Alex. Meanwhile, Claire and Manny get to know each other as siblings.

Jay's ex-wife, Dede (Shelley Long), tries to make amends with everyone she offended at Jay and Gloria's wedding.

Tensions rise during a day of barbecue and football at Jay and Gloria's in the wake of an incident between Manny and Luke at school.

Jay and Gloria have a disagreement about Manny's choice of outfit for his first day back at school; Cameron and Mitchell freak out when Lily gets a bump on the head.

The family comes out to support Manny's newfound interest, fencing; Phil is determined to find Luke's hidden talent.

A woman from Archer's past returns and threatens his transplant surgery; Marcel clashes with Med's eager first-year resident; Charles works to repair his relationship with Ripley.

Mouch sets out to change his legacy and nickname; Ritter pushes Herrmann to see a doctor; Brett searches for the perfect wedding venue.

A murder pulls rookie officer Dante Torres into his own neighborhood; as Voight and Atwater help him navigate the case and manage tricky personal dynamics with wary neighbors, Torres realizes his life may be forever changed.

Dave's making a video that will vault him to global success, but he's forced to face reality as the project threatens to implode, and create an international incident.

Back home, Dave is trying to hold his own feet to the creative fire, but the world has conspired to throw every possible distraction at him, especially the fact that he's going to see Ally for the first time since they broke up.

Dave and Benny's friendship blossoms in strange and unexpected ways, leading them to confront questions of privilege, race, sexuality, and dermatology; Mike's isolation deepens, and a chance encounter sheds light on the root of his anger.

Dave meets NBA all-time leading scorer Kareem Abdul-Jabbar, but gaining his affection is not exactly a layup.

Dave and Elz's friendship is tested when they perform together at a bar mitzvah; GaTa has a night out.

Dave joins an exclusive online dating app and matches with a pop star; technological courtship ensues, as Dave gets caught up in the excitement of a modern-day romance.

Dave and Emma reminisce about their advertising days while battling present-day identity crises at one of hip-hop's largest showcases.

Dave has a professional setback and is forced to spend more time with his parents; family time has never been more eye-opening.

Dave journeys to a legendary recording studio, hoping to break through his creative block but is forced to confront his greatest obstacle: his own ego.

Dave journeys to a legendary recording studio, hoping to break through his creative block but is forced to confront his greatest obstacle: his own ego.

Dave releases his debut album "Penith" and the rest is history; written by Dave Burd and directed by Alma Har'el.

Dave releases his debut album "Penith" and the rest is history; written by Dave Burd and directed by Alma Har'el.

Someone breaks into Emma's car, and Elz tries to help her recover her laptop; in an effort to play his beats for Trippie, Elz ends up taking on a precarious task.

Dave's got a new lease on life, a new house and a new house guest; his friends have other plans.

Dave attends his first Met Gala; Gata attends his first mental health panel.

When a car accident leads Charlie and Rex to investigate reports of a strange blue light in the sky, they discover the truth is more science than fiction.

Charlie and Rex have a run-in with a wanted criminal, when his past catches up with him.

Charlie and Rex investigate a hot case under cold conditions when a figure skating coach is found dead.

When a car accident leads Charlie and Rex to investigate reports of a strange blue light in the sky, they discover the truth is more science than fiction.

Charlie and Rex have a run-in with a wanted criminal, when his past catches up with him.

Charlie and Rex investigate a hot case under cold conditions when a figure skating coach is found dead.

When a car accident leads Charlie and Rex to investigate reports of a strange blue light in the sky, they discover the truth is more science than fiction.

Jake and Charles investigate a case of Hitchcock and Scully's from the 1980s; Amy's uniformed officers and Terry's detectives fight over limited resources.

Jake and Gina revisit their past when they attend their 20th high school reunion with Amy; at the Nine-Nine, Charles helps Rosa with a thorny problem concerning her love life; Holt, Terry, Hitchcock and Scully get caught up in an acoustical dilemma.

Leslie passes a city-wide tax on huge sodas in hope of combating obesity in Pawnee; Chris helps Andy prepare for his police entrance exam.

Leslie tries to pass a law extending the community pool hours; Chris thinks of a new way to solve people's problems around the city, which leads to Ron fixing a pothole for a local mother (Lucy Lawless); April and Ben plan a road trip.

Jack, nervous about attending a corporate retreat, persuades Liz to accompany him for support; when Jenna decides to use method acting to prepare for a role she finds herself at Frank's mercy.

Liz discovers she has a handsome, single neighbor she would like to meet; Jack is determined to win over Elisa's grandmother; the new interns ask Tracy out for a night of partying.

Claire wants to surprise Phil with a private performance by one of their favorite musicians (Edward Norton); Cameron and Mitchell invite their friend Sal (Elizabeth Banks) out for a night on the town.

Claire and Phil decide to plan the biggest and best birthday party for Luke.

Gloria does not like Jay's reaction to the arrival of Manny's father (Benjamin Bratt); Phil is rushed to the hospital; Mitchell and Cameron try to sleep-train Lily.

When Claire finds a dirty picture on the computer and assumes it is Luke's doing, guilty Phil does not correct her; Jay and Gloria disagree over his beloved, life-size dog butler statue; Cameron involves himself in the gardener's woes.

Mitchell plants an idea in Jay's head; Manny's date gets a makeover from Gloria.

A visit from an old friend (Minnie Driver) leaves Claire feeling inadequate; Mitchell tries to help Gloria with some legal issues.

Frustrated with an insurance company, Ahmad takes matters into her own hands, jeopardizing Med's negotiations and Marcel's first day on the board; Charles helps a woman's depressed husband; Asher's first date takes a surprising turn.

After witnessing a domestic dispute, Brett and Violet decide to take the investigation into their own hands; Mouch vets Truck 81's new firefighter; Herrmann relies on something new to aid him on the job.

Upton's dogged pursuit of a missing teenage girl leads the team into a dark web of human trafficking; chief O'Neal becomes involved with the unit's investigation when it becomes evident his son, Sean, has a connection to the missing girl.

When a merchandising convention comes to town, the gang tries to develop marketable products in an attempt to build Paddy's brand.

Mac and Dennis decide to spend some time apart; Chris lends his feline expertise to help Dee find her cat.

Dennis reveals his fool-proof system for seducing any woman to the rest of the gang, but they don't grasp the concept.

Dee gets a part in M. Night Shyamalan's movie; Mac and Charlie see a perfect opportunity to sell their movie.

After a 10-year ban, Paddy's team is eligible to compete in Flipadelphia, a city-wide flip cup tournament.

Keeping the basement rodent-free drives Charlie to the brink; the gang throws Charlie a surprise party.

A blast from the past motivates the guys to add another person to their membership; Dee reconsiders her future.

After falling out of the window, Frank thinks that it's 2006; the other three see this as a chance to fix their past mistakes.

Frank and Mac try to market Charlie as a talented artist for profit; Dennis and Dee bring Dennis' erotic memoirs to the screen.

Dennis and Mac head to the suburbs for cheap rent and open spaces but quickly find out that they are meant for city life.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run-in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run in with Santa Claus.

Gina plays a high-stakes game of chess with Capt. Holt; Rosa and Amy take Gina out for a fancy brunch; Jake and Gina must use their wits to infiltrate a posh club.

Not realizing it's going to be a holiday, Liz insists that she and Drew have their first official date on Valentine's Day; Kenneth tries to win the affections of a new staffer.

Jake and Amy's wedding day is threatened; Charles and the whole squad rush to save it; Holt hesitates to open the email indicating if he won his campaign for commissioner; Terry gently pushes Rosa toward a potential love interest.

Jake and Amy go on their honeymoon; Capt. Holt finds out whether he is the new commissioner of the NYPD.

After a murder at the shipping container port, Charlie and Rex partner with a Border Security officer to track down the mastermind behind a smuggling ring.

Charlie and Rex pull apart the secrets of a local band when their lead singer is found dead on the beach.

The clock is ticking as Charlie and Rex attempt to find a murderer before the victim can succumb to the poison slowly killing them.

After a murder at the shipping container port, Charlie and Rex partner with a Border Security officer to track down the mastermind behind a smuggling ring.

Charlie and Rex pull apart the secrets of a local band when their lead singer is found dead on the beach.

The clock is ticking as Charlie and Rex attempt to find a murderer before the victim can succumb to the poison slowly killing them.

After a murder at the shipping container port, Charlie and Rex partner with a Border Security officer to track down the mastermind behind a smuggling ring.

Charlie and Rex pull apart the secrets of a local band when their lead singer is found dead on the beach.

Leslie holds a sex-education class following an STD outbreak among senior citizens in Pawnee; when Tom's gadgets are taken away, Ron helps him acclimate to life without technology; April and Ben meet Congressman Murray.

Ben gets a job offer, forcing Leslie to think about their future; Ron and Andy take Diane's girls trick-or-treating; Tom looks for a new business idea.

Jack thinks about taking his relationship with Elisa to the next level; Tracy's interview with Larry King sends the city into a panic.

Liz befriends a pregnant teen in hope of adopting her baby; Jenna tries to get more attention from the staff as her birthday approaches; Jack and Frank bond over their daddy issues.

Claire and Phil plan a Valentine's Day excursion; Jay takes Gloria to a comedy show; Cameron and Mitchell try to play cupid for Manny.

Phil tries to conquer his fear of the dark when he and Luke go on a discovery expedition underneath the house; Mitchell and Cameron invite Lily's pediatrician over for brunch.

Phil invites his high school girlfriend (Judy Greer) to the house; Jay accidentally kills Manny's pet turtle, then goes to extremes to cover his tracks; overworked Mitchell stands up to his boss.

Claire and Phil each take on one of the kids' school projects; Gloria and Cameron bond during a night out.

The release of a new product Phil wants coincides with his birthday; Mitchell has a newfound desire to toughen up; Cameron gets involved in a neighbor's marital problems.

Luke and Manny's hot-tempered basketball coach quits during a game, causing Jay and Phil to jockey to fill the position; Mitchell takes Cameron along to meet a prospective employer.

Goodwin is worried after an accident lands two people close to her in the E.D.; Archer returns to Med and treats a man concerned about a family curse; Maggie and Ahmad help a patient on a cross-country road trip.

Julia spends a couple of days at 51; Boden's stepson, James, returns, desperate for Boden to help his mother; after a little girl starts a fire in her backyard, Kidd and her team decide to dig deeper.

Atwater's reactions during a tense arrest are called into question; the team must dig in to uncover key evidence that could aid in the ongoing investigation and clear Atwater's name.

While facing eminent death, Charlie, Mac, Dee, Dennis and Frank take the time to finally get real with one another.

After an electric heating blanket shorts out while the gang watches "The Wiz," they look in the mirror and realize they've turned black; to get back to being themselves they go through all manner of classic body-switch movie shenanigans.

The group heads to the water park, each with an ulterior motive; Dennis takes on a protege; Frank and Charlie are determined to ride every ride; Mac and Dee get stuck in a tube slide.

Charlie believes Mac's mother holds his mother hostage, so the gang installs spy cameras to monitor what goes on in their house.

A news segment announces that Wolf Cola is the official drink of Boko Haram; Dee and Dennis work on the PR nightmare; Charlie and Mac try to promote Fight Milk.

When a cat-woman is found dead in an alley, Dennis becomes the prime suspect.

After finding out that she is a male stripper's "rock bottom," Dee sets out to prove that she is the best thing that ever happened to him; Dennis takes over for a stripper; Mac and Frank play a war game.

Customers pack Paddy's on Valentine's Day; Dennis implores the gang to do one day of actual work, but a mystery crate that Cricket spots in the alley distracts everyone.

A typical day in Cricket's world ends with possible redemption when his family intervenes, setting up a chance to move on from the gang, find love and reemerge as Matthew Mara once again.

Dennis reveals that he has a baby from his layover time in North Dakota and everyone offers solutions to the problem, but in the end, Dennis must decide which life to continue to lead.

Frank tries to recruit Mac for the gang's float for the Gay Pride Parade; Frank comes to the realization that Mac will never be secure with his sexual identity unless he comes out to his father.

Cindy, the new female member of the gang, successfully pulls off scams; everything works until Mac introduces a lifelike sex doll that looks exactly like Dennis.

Leslie meets Ben's parents; Jean-Ralphio helps Tom prepare the pitch for his new business idea; Chris has mood swings.

The TGS cast and crew are left unmanaged when Liz can't get out of jury duty; Jack gets absorbed in launching a new product.

Claire is suspicious when Phil's father shows up for an expected visit; Manny is traumatized by a horror movie.

Gloria invites the whole family on a getaway to Hawaii for Jay's birthday.

Charlie and Rex are thrust into action when a popular social media star meets an untimely demise while live streaming her wedding.

As Charlie and Rex head into the woods to track a missing photographer, a mysterious organization throws the investigation off its trail.

Charlie and Rex investigate a fantasy role-playing game turned deadly when a player is found slain by a sword.

Charlie and Rex are thrust into action when a popular social media star meets an untimely demise while live streaming her wedding.

As Charlie and Rex head into the woods to track a missing photographer, a mysterious organization throws the investigation off its trail.

Charlie and Rex investigate a fantasy role-playing game turned deadly when a player is found slain by a sword.

Charlie and Rex are thrust into action when a popular social media star meets an untimely demise while live streaming her wedding.

As Charlie and Rex head into the woods to track a missing photographer, a mysterious organization throws the investigation off its trail.

April tries to get Lot 48 turned into a dog park, upsetting Leslie; Tom gets Ben's help with his new business idea; Andy improves his crime scene investigation skills.

Leslie asks the public for park design suggestions but is suspicious when the best design comes from an Eagleton architect; Tom asks the office for help with his new business; Andy tries to make his job as a security guard exciting.

Liz discovers that Drew's charm and good looks have brought him special treatment; Jack tries to convince Tracy to stay at TGS after his contract expires.

Jack plans his 50th birthday party; Liz's ex-boyfriend, Dennis, makes a confession that stirs up drama between Jenna and Liz; Pete and Kenneth try to make Tracy's childhood dream come true.

An unexpected reality check dampens Jay's plans for relaxation; Phil wants to make the trip romantic for Claire; the kids get into mischief when left to their own devices.

Everything seems to be working against Claire's plans for a new family portrait; Cameron gets a gig as a wedding singer, leaving Mitchell home alone with Lily and a wayward pigeon.

Jay's relationship with the dog irritates Gloria; Phil and Luke try to master the tightrope; Cameron starts a juice fast.

Mitch and Cam bring the family together to announce their plan to adopt another child.

The family takes a vacation on a ranch in Jackson Hole, Wyo.; Jay faces off with a cowboy.

Jay helps Manny with a school fundraiser; Claire petitions for a stop sign at a busy intersection; Phil and Luke try to create a viral video; Gloria searches for Stella.

Goodwin recruits Charles to evaluate her ex-husband's memory; Archer treats one of Sean's peers from the rehab center; Asher treats a woman from a rural clinic whose miscarriage was improperly treated.

After their defibrillator malfunctions on a call, Brett and Violet search for answers; Herrmann tries to find the perfect home for his new recliner; a secret from Gibson's past comes to light.

When actionable evidence finally surfaces against Sean O'Neal, Upton and the team work relentlessly to build a case in secret; they discover Sean is more elusive and dangerous than anticipated.

To boost productivity, Dee hires an at-home "Escape Room Experience" service to come to Dennis and Mac's apartment.

To one-up the guys, Dee organizes an "all-female reboot" of the Wade Boggs challenge on a first-of-its-kind, all-female flight headed to Los Angeles for a women's march.

When Paddy's is put on a list of bars that are sexually hostile toward women, the gang must attend a sexual harassment seminar to get their establishment removed from the list.

Dee gets in with a group of cool, rich housewives; Dennis hits it off with some everyday blue-collar bros; Frank struggles to renew his license; Charlie and Mac deal with a new generation of bicycle bullies.

Jimmy Buffett is in town and the positive vibes are alive at the bar; when Mac comes out of the women's bathroom, no one can leave until the bathroom situation is solved.

With nothing to do while their phones update to the latest software, the gang decides to reminisce on old times; as everyone misremembers events from their past, the gang's current reality becomes altered.

In the most important weekend of their lives, Frank treats the gang and a crew of their ragtag hangers-on with tickets to see the Eagles in the Super Bowl.

Mac concocts a scheme to attract single women to rent Dennis' bedroom while Frank and Charlie make similar plans to draw in young, European coeds, but neither ad attracts their intended target.

To boost productivity, Dee hires an at-home "Escape Room Experience" service to come to Dennis and Mac's apartment.

To one-up the guys, Dee organizes an "all-female reboot" of the Wade Boggs challenge on a first-of-its-kind, all-female flight headed to Los Angeles for a women's march.

In the black-and-white noir world of his memory, Charlie navigates the seedy underbelly of Philadelphia when Frank is "diarrhea poisoned," and it's up to Charlie to clean up the mess.

As a record-breaking heat wave overtakes Philly, the gang plans to profit from global warming by pumping up the A/C so people will congregate at Paddy's and save energy at home.

Ann plans a bachelorette party for Leslie, but Councilman Jamm derails the event; Chris has a game night at Ben's.

TGS employees worry about upcoming budget cuts; Tracy and Jenna think that Kenneth is hiding a dark secret.

Gloria tries to help Jay and Manny with their problems, but both are unreceptive; Claire considers running against Councilman Duane Bailey (David Cross); Cam and Mitch are the victims of a hit-and-run accident.

Terry believes the Pontiac Bandit is stealing cars again, but Jake is convinced his friend wouldn't do that; the rest of the squad fight to keep Shaw's a police bar after some firemen stake their claim to it.

Charlie and Rex are in deep water after a university rower is shot by a sniper during team practice.

Cultures clash when the death of a Parisian journalist has Charlie and Rex partnering with a French detective in an investigation that whisks the team to Saint Pierre and Miquelon.

Charlie and Rex follow the route of a killer after a tech engineer is found dead in her company's self-driving car.

Charlie and Rex are in deep water after a university rower is shot by a sniper during team practice.

Cultures clash when the death of a Parisian journalist has Charlie and Rex partnering with a French detective in an investigation that whisks the team to Saint Pierre and Miquelon.

Charlie and Rex follow the route of a killer after a tech engineer is found dead in her company's self-driving car.

Charlie and Rex are in deep water after a university rower is shot by a sniper during team practice.

Jake and Rosa must deal with a mother in mourning as they work and rework a crime scene to solve a difficult murder case with confusing evidence.

Jake and Holt clash over the merits of a new hire in the 99th precinct; Terry, Amy, Rosa and Charles try to do something about the cluttered bullpen.

April and Leslie try to get more women hired in government; Tom asks Ben and Andy to teach him about basketball; Ron watches Diane's kids.

After a series of unsuccessful relationships, Ann makes a decision; Ben asks Tom, Chris and Ron to help him select a caterer for the wedding; April has to complete one of Leslie's tasks.

Liz must find a way to occupy her time during a short-term suspension from work; Jack asks Jenna to create promotional buzz when the film studio has second thoughts about releasing her Janis Joplin biopic.

Jack shops for an engagement ring; Liz finds out that Elisa is keeping a secret; Jenna falls for an attractive EMT.

Phil takes Haley to visit his alma mater; Claire goes out with Mitchell and Cameron; Gloria and Jay may have to broach a delicate subject with Manny.

Gloria insists on a night of salsa dancing with Jay; Cameron goes too far when Mitchell and a friend challenge him to get a hot woman's (Leslie Mann) number; Phil builds a tree house.

After a fire destroys a neighbor's home, the whole family tries to help by organizing a community drive.

A former neighborhood resident, now rich and successful, returns for a visit; Jay thinks Manny needs constructive criticism; Mitchell questions the authenticity of Cameron's colorful childhood stories.

When Phil misses a call from his doctor with test results, he immediately assumes the worst; Javier stops by to take Manny to the horse races; Mitchell's winning of an environmental law award sparks a competition.

Claire and Jay's competitive streaks lead them to take over their kids' school projects; Phil asks Haley and Gloria to help him with a presentation; Mitch and Cam meet with prospective birth mothers.

Maggie empathizes with a patient whose mother is afraid to consent to her son's risky surgery; Ripley treats someone from his past; Ahmad questions her instincts after her actions have unexpected consequences.

Firehouse 51 welcomes back some familiar faces and says goodbye to Brett; Violet scrambles to decorate Brett's wedding venue; a call at the expo center takes a shocking turn.

To distract Intelligence from the investigation into his son, Chief O'Neal forces the team to handle a "dead fish" case; when that dead fish turns into a complicated heater case, Burgess is thrown back into difficult memories from her past.

Landing in the middle of a focus group after a screening of "Thunder Gun 4: Maximum Cool," the gang is determined to restore glory and traditional American values back into the franchise, even if it involves sabotage.

Trapped inside Paddy's with a suicidal jumper on the roof, the gang wonders if it should bother intervening.

When a trendy new hair salon opens up next door to Paddy's, Dennis and Frank go on the offensive to stop women from cutting off their hair; Mac reunites with his childhood dog, Poppins.

Dennis and Charlie stand guard at the entrance to their laser tag base waiting to ambush the legendary "Big Mo," but Dennis begins to ponder the reasons they play laser tag and if their pursuit of a victory is worth their effort.

Dennis and Dee explore their new accommodations in the countryside; Frank accompanies Charlie to find the truth about Charlie's Irish childhood pen pal; Mac has an identity crisis and decides to join the seminary.

Mac spends a day at the seminary to truly understand what it takes to become a priest; Dennis and Frank plan an elaborate trap to humiliate Charlie's pen pal; Dee prepares for a date with an Irish doctor; Charlie bonds with his pen pal.

The Gang attempts to ascend a mountain in order for Charlie to fulfill an old and mysterious Irish burial tradition; one by one, the Gang backs out until Charlie is left to honor the dead body alone.

Keeping the basement rodent-free drives Charlie to the brink; the gang throws Charlie a surprise party.

Landing in the middle of a focus group after a screening of "Thunder Gun 4: Maximum Cool," the gang is determined to restore glory and traditional American values back into the franchise, even if it involves sabotage.

To boost productivity, Dee hires an at-home "Escape Room Experience" service to come to Dennis and Mac's apartment.

To one-up the guys, Dee organizes an "all-female reboot" of the Wade Boggs challenge on a first-of-its-kind, all-female flight headed to Los Angeles for a women's march.

When Paddy's is put on a list of bars that are sexually hostile toward women, the gang must attend a sexual harassment seminar to get their establishment removed from the list.

Jake and Amy investigate a difficult "he said, she said" case; Holt becomes suspicious after learning his lifelong arch nemesis died in a prison transport accident.

Jake helps Amy navigate the complicated relationship she has with her brother David; Charles introduces some drama into an undercover mission involving Terry and Holt.

Cultures clash when the death of a Parisian journalist has Charlie and Rex partnering with a French detective in an investigation that whisks the team to Saint Pierre and Miquelon.

When a prominent member of an exclusive dating app is found with an arrow through his heart, Charlie must go undercover in the online dating scene.

When the circumstances of a murder appear to mimic a contentious crime from twenty years earlier, Charlie and Rex must connect the past to the present while fending off a true crime podcaster.

Charlie and Rex head underground into an allegedly haunted mine after a crew member turns up dead during a horror film shoot.

When a prominent member of an exclusive dating app is found with an arrow through his heart, Charlie must go undercover in the online dating scene.

When the circumstances of a murder appear to mimic a contentious crime from twenty years earlier, Charlie and Rex must connect the past to the present while fending off a true crime podcaster.

Charlie and Rex head underground into an allegedly haunted mine after a crew member turns up dead during a horror film shoot.

When a prominent member of an exclusive dating app is found with an arrow through his heart, Charlie must go undercover in the online dating scene.

A visitor from Latvia causes Charles and Jake to investigate Nikolaj's family; Holt and Amy bring in famed forensic scientist Dr. Yee to help close a case for Rosa.

Charles brings Jake into a case when a therapist reports one of his patients missing; Holt finds out Rosa has a new girlfriend that everyone else has met; Amy believes she has accidentally received a package meant for Terry.

Ben and Leslie put together a black-tie gala to raise money for the park, but a drill for a city-wide emergency derails their plans; Andy gets ready for his police academy exam; Ron fills in for Leslie on "Pawnee Today.".

Leslie and Ben work to complete a years-long project in two hours; Ron's temper causes trouble.

Tracy decides to start acting like a professional; Jack's mother reveals unpleasant memories about Jack's father; Jenna gets a pet gibbon.

Tracy and Liz convince Jack to start the search for his real father; Pete and Liz question the motives of Tracy's newly discovered illegitimate son; Liz and Jenna fight for the spotlight.

Claire prepares for her debate with Duane Bailey; Mitch and Cam try to clean up Lily's language before her turn as a flower girl; Jay blames Stella's strange behavior on Gloria.

Claire thinks Phil's new business partner (Greg Kinnear) is blatantly inappropriate, but Phil doesn't notice; while their house is being fumigated, Cameron and Mitchell stay with Jay and Gloria.

After selling a house to Mitch and Cameron's friends, Claire and Phil plan a celebratory dinner; overindulging in drinks leads to over sharing.

Mitchell ruins one of Jay's proudest moments; Phil overhears something about one of his daughters; Gloria accidentally discovers Claire's secret.

Mitchell feels pressured to make Cameron's birthday extra special; Jay's manliness comes into question; the girls interfere with Phil's leap day plans.

On Election Day, the family does some last-minute campaigning for Claire; Claire experiences technical difficulties during interviews.

Ripley and Charles treat a patient with obsessive-compulsive disorder; Asher and Archer encounter a woman with a foreign object lodged in her heart; Marcel clashes with the chief of oncology.

Violet clashes with her new partner; Severide discovers a hidden stash of money on a call and squares off against the cops working the case; Mouch gets a parking ticket.

After a shocking discovery, the team begins closing in on Sean O'Neal with every shred of evidence they can find; determined to keep his son out of prison, Chief O'Neal hires a lawyer.

Dee gets in with a group of cool, rich housewives; Dennis hits it off with some everyday blue-collar bros; Frank struggles to renew his license; Charlie and Mac deal with a new generation of bicycle bullies.

Jimmy Buffett is in town and the positive vibes are alive at the bar; when Mac comes out of the women's bathroom, no one can leave until the bathroom situation is solved.

With nothing to do while their phones update to the latest software, the gang decides to reminisce on old times; as everyone misremembers events from their past, the gang's current reality becomes altered.

Frank tries to recruit Mac for the gang's float for the Gay Pride Parade; Frank comes to the realization that Mac will never be secure with his sexual identity unless he comes out to his father.

Mac concocts a scheme to attract single women to rent Dennis' bedroom while Frank and Charlie make similar plans to draw in young, European coeds, but neither ad attracts their intended target.

Landing in the middle of a focus group after a screening of "Thunder Gun 4: Maximum Cool," the gang is determined to restore glory and traditional American values back into the franchise, even if it involves sabotage.

Annoyed that the gang failed to react as he nearly choked to death on an appetizer, Frank decides the waiter, his savior, is the only person who has his back.

During their trip to the Philadelphia Zoo, Mac sets up a text group chain for the gang, but confusion sets in and the gang must learn from the meerkats on how to communicate properly in a group.

Mac and Dee become vigilantes in an attempt to rid the neighborhood of the homeless; Frank and Dennis impersonate police officers; Charlie must step in and end his friends' corrupt activity.

Dee gets in with a group of cool, rich housewives; Dennis hits it off with some everyday blue-collar bros; Frank struggles to renew his license; Charlie and Mac deal with a new generation of bicycle bullies.

Trapped inside Paddy's with a suicidal jumper on the roof, the gang wonders if it should bother intervening.

Jimmy Buffett is in town and the positive vibes are alive at the bar; when Mac comes out of the women's bathroom, no one can leave until the bathroom situation is solved.

Work is so busy for Jake and Amy that they end up celebrating their anniversary while standing guard over a comatose patient in the hospital.

Holt and Jake investigate a case at Kevin's university; back at the precinct, Terry and Amy take the squad out for lunch.

When the circumstances of a murder appear to mimic a contentious crime from twenty years earlier, Charlie and Rex must connect the past to the present while fending off a true crime podcaster.

Charlie and Rex investigate the long list of enemies surrounding a vitriolic celebrity chef after a finger turns up in his Beef Wellington.

Charlie is unable to let a serial arsonist case rest, even when he is in the hospital with a broken leg; working from his bed, he hopes to identify the arsonist before he strikes again.

Charlie and Rex find themselves at the mercy of a dangerous crime kingpin from their past when they enlist his help on a case.

Charlie and Rex investigate the long list of enemies surrounding a vitriolic celebrity chef after a finger turns up in his Beef Wellington.

Charlie is unable to let a serial arsonist case rest, even when he is in the hospital with a broken leg; working from his bed, he hopes to identify the arsonist before he strikes again.

Charlie and Rex find themselves at the mercy of a dangerous crime kingpin from their past when they enlist his help on a case.

Charlie and Rex investigate the long list of enemies surrounding a vitriolic celebrity chef after a finger turns up in his Beef Wellington.

When Holt starts getting death threats, Jake takes charge of his security; Amy tries to get a precinct Christmas photo; Terry gets his mojo back.

The Pontiac Bandit is back in custody, where his knowledge of a Giggle Pig dealer earns him a plea deal; Gina and Boyle worry their parents are getting too close; Santiago makes Holt a Christmas present.

A meeting with a disgraced councilman lands Leslie in the middle of a sex scandal; when Ron offers to cover for Leslie for a day, he quickly discovers how much work she really does.

Leslie forms a citizen action group in hope of getting some work done; everyone in the office tries to plan a Christmas gift for Leslie.

Tracy cannot participate in the staff's annual Ludachristmas party; Liz's parents (Buck Henry, Anita Gillette) and brother (Andy Richter) come to gloat over her.

Liz finds herself alone for the holidays when her parents leave to spend Christmas at a couples-only retreat; Jack plans a dream holiday vacation away from his mother (Elaine Stritch); the crew is asked to produce a last-minute Christmas special.

Claire and Phil threaten to take away Christmas when the kids get into trouble; Cameron and Mitchell take Lily to have her first picture taken with Santa.

The family puts together a quick Christmas celebration when they realize they won't be together on the actual day.

Jay and Manny set out to cut down their own Christmas tree; Gloria is on edge when her mother visits; Mitchell does last-minute shopping to find the perfect gift for Lily.

Gloria rents a cabin in the mountains where the family can celebrate a picture-perfect Christmas, but unexpected factors complicate the holiday; Jay makes an announcement.

Mitchell suspects Cameron has an ulterior motive for keeping everyone happy for Christmas dinner; Claire tries to dodge Jay's job offer to work at his dog bed company; Luke has to deal with the consequences of kissing Manny's ex-girlfriend Sherri.

When Holt starts getting death threats, Jake takes charge of his security; Amy tries to get a precinct Christmas photo; Terry gets his mojo back.

The Pontiac Bandit is back in custody, where his knowledge of a Giggle Pig dealer earns him a plea deal; Gina and Boyle worry their parents are getting too close; Santiago makes Holt a Christmas present.

Claire and Phil threaten to take away Christmas when the kids get into trouble; Cameron and Mitchell take Lily to have her first picture taken with Santa.

The family puts together a quick Christmas celebration when they realize they won't be together on the actual day.

Jay and Manny set out to cut down their own Christmas tree; Gloria is on edge when her mother visits; Mitchell does last-minute shopping to find the perfect gift for Lily.

Gloria rents a cabin in the mountains where the family can celebrate a picture-perfect Christmas, but unexpected factors complicate the holiday; Jay makes an announcement.

Mitchell suspects Cameron has an ulterior motive for keeping everyone happy for Christmas dinner; Claire tries to dodge Jay's job offer to work at his dog bed company; Luke has to deal with the consequences of kissing Manny's ex-girlfriend Sherri.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run-in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run-in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run-in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run-in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run-in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run-in with Santa Claus.

Mac, Charlie, Dennis, Dee and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves and a bloody run in with Santa Claus.

On an episode that takes place in real time, Jake and the squad must track down a hacker who has infiltrated the Nine-Nine's servers; Rosa deals with relationship issues; Hitchcock and Scully attempt to cook the perfect lasagna.

When Gina returns to the Nine-Nine, Jake and Terry get drawn into her life; Holt learns that Charles' son, Nikolaj, may be a genius; Rosa copes with an injury.

A new captain at the Nine-Nine attempts to ingratiate herself with Jake and the squad by inviting them over to her house for a dinner party.

Jack tries to protect his job and the company when Devin returns to seek revenge; Tracy and Jenna try to make Liz's life miserable; Kenneth volunteers at an animal shelter.

When Sarah ́s former professor is allegedly framed for murder, Sarah calls Charlie and Rex to untangle the perfect crime.

After a woman is found dead in the snow, Charlie and Rex have a pool of unconnected suspects with only one thing in common - the victim was convinced they were all her family.

Charlie and Rex pull apart the secrets of a local band when their lead singer is found dead on the beach.

When Sarah ́s former professor is allegedly framed for murder, Sarah calls Charlie and Rex to untangle the perfect crime.

After a woman is found dead in the snow, Charlie and Rex have a pool of unconnected suspects with only one thing in common - the victim was convinced they were all her family.

Charlie and Rex pull apart the secrets of a local band when their lead singer is found dead on the beach.

When Holt starts getting death threats, Jake takes charge of his security; Amy tries to get a precinct Christmas photo; Terry gets his mojo back.

The Pontiac Bandit is back in custody, where his knowledge of a Giggle Pig dealer earns him a plea deal; Gina and Boyle worry their parents are getting too close; Santiago makes Holt a Christmas present.

Rosa begs Jake to help her break some big news to her parents.

When Holt starts getting death threats, Jake takes charge of his security; Amy tries to get a precinct Christmas photo; Terry gets his mojo back.

Tammy II crashes a woodworking awards dinner that Ron, Diane and Leslie are attending; Jerry fails to invite some of his friends to his holiday party.

A meeting with a disgraced councilman lands Leslie in the middle of a sex scandal; when Ron offers to cover for Leslie for a day, he quickly discovers how much work she really does.

Jack's interest in a new social-networking Web site unexpectedly connects him with a high-school crush; Kenneth tries to organize a secret Santa swap; Liz must buy a gift that is good enough for Jack.

Jenna's envy pushes Liz over the edge; Jack forms a plan to avoid disappointing his mother; Tracy tries to cheer up Kenneth.

Mitchell suspects Cameron has an ulterior motive for keeping everyone happy for Christmas dinner; Claire tries to dodge Jay's job offer to work at his dog bed company; Luke has to deal with the consequences of kissing Manny's ex-girlfriend Sherri.

The family puts together a quick Christmas celebration when they realize they won't be together on the actual day.

Jay and Manny set out to cut down their own Christmas tree; Gloria is on edge when her mother visits; Mitchell does last-minute shopping to find the perfect gift for Lily.

Mitchell suspects Cameron has an ulterior motive for keeping everyone happy for Christmas dinner; Claire tries to dodge Jay's job offer to work at his dog bed company; Luke has to deal with the consequences of kissing Manny's ex-girlfriend Sherri.

Rosa begs Jake to help her break some big news to her parents.

When Holt starts getting death threats, Jake takes charge of his security; Amy tries to get a precinct Christmas photo; Terry gets his mojo back.

Tammy II crashes a woodworking awards dinner that Ron, Diane and Leslie are attending; Jerry fails to invite some of his friends to his holiday party.

A meeting with a disgraced councilman lands Leslie in the middle of a sex scandal; when Ron offers to cover for Leslie for a day, he quickly discovers how much work she really does.