The rookies are temporarily paired with new training officers; when Nolan and Lopez track down an escaped criminal, they discover a little kindness goes a long way; Jackson is forced to face his fears when he is partnered with officer Bradford.

The team must help capture a cop and his former mentor from the academy after he becomes a fugitive following an assault; Officer Tim Bradford needs Officer Lucy Chen to learn to predict the moves of criminals in order to capture them.

Sgt. Grey informs officer Nolan and officer Bishop that they are going to have a movie director as a ride-along; officer Bradford learns that his wife has been arrested for drug possession.

Nolan and Bishop respond to a silent alarm call at a local convenience store where two men are attempting to rob the place; Bishop helps coordinate a drug bust.

A private school owner is kidnapped.

An abandoned suitcase containing a young woman's body, leads to a mystery of a second woman missing too.

The murder of a gay couple in rural California leads investigators into the world of hate crimes.

After Platt is physically assaulted while getting into her car, she's rushed to Chicago Med, where Mouch finds himself being questioned; Antonio and the team look for previous threats against Platt.

Lindsay and Ruzek respond when a car crashes through a crowd of concert-goers and a gunman opens fire; Burgess sees Atwater's brother somewhere he shouldn't be.

The body of a college student is found with a backpack full of a drug linked to deadly overdoses around the city; Tay finds a bloodied child with a dark story about his parents; Mouse looks to re-enlist in the army.

While responding to a complaint, Burgess and Sorensen find the body of a 16-year-old girl in a baseball player's (Billy Burke) house; Lindsay receives a mysterious delivery that might have ties to her past.

When the only witness to the rape and murder of a young man gets killed, the team suspects that someone was paid to take the victim out; Antonio receives a job offer from the state attorney's office.

A highly trained killer is believed to be targeting the police department; Lindsay speaks to Antonio about his job with the state's attorney.

Severide is brought in for questioning after it is discovered that his car has been involved in a deadly crash; Lindsay considers meeting her estranged father.

After Platt is physically assaulted while getting into her car, she's rushed to Chicago Med, where Mouch finds himself being questioned; Antonio and the team look for previous threats against Platt.

Lindsay and Ruzek respond when a car crashes through a crowd of concert-goers and a gunman opens fire; Burgess sees Atwater's brother somewhere he shouldn't be.

The body of a college student is found with a backpack full of a drug linked to deadly overdoses around the city; Tay finds a bloodied child with a dark story about his parents; Mouse looks to re-enlist in the army.

While responding to a complaint, Burgess and Sorensen find the body of a 16-year-old girl in a baseball player's (Billy Burke) house; Lindsay receives a mysterious delivery that might have ties to her past.

Colter's search for a woman who went missing from a rehab facility takes an unexpected turn when he runs into Billie, uncovering a possible link between each of their cases.

Seventeen-year-old Brittanee Drexel sneaks off to Myrtle Beach, S.C., to join her friends for spring break; but she goes missing two days later.

In 2001, 20-year-old Lynsie Ekelund lives with her mother, Nancy; the two are incredibly close, and Nancy is Lynsie's primary caregiver after a car accident left one side of Lynsie's body partially paralyzed; one night in 2001, unbeknownst to her mother, Lynsie plans to travel to spring break hotspot San Diego for a night of clubbing with friends; when Lynsie doesn't arrive home the next day, her mom suspects something has gone horribly wrong.

After Platt is physically assaulted while getting into her car, she's rushed to Chicago Med, where Mouch finds himself being questioned; Antonio and the team look for previous threats against Platt.

Lindsay and Ruzek respond when a car crashes through a crowd of concert-goers and a gunman opens fire; Burgess sees Atwater's brother somewhere he shouldn't be.

The body of a college student is found with a backpack full of a drug linked to deadly overdoses around the city; Tay finds a bloodied child with a dark story about his parents; Mouse looks to re-enlist in the army.

While responding to a complaint, Burgess and Sorensen find the body of a 16-year-old girl in a baseball player's (Billy Burke) house; Lindsay receives a mysterious delivery that might have ties to her past.

When the only witness to the rape and murder of a young man gets killed, the team suspects that someone was paid to take the victim out; Antonio receives a job offer from the state attorney's office.

A highly trained killer is believed to be targeting the police department; Lindsay speaks to Antonio about his job with the state's attorney.

Severide is brought in for questioning after it is discovered that his car has been involved in a deadly crash; Lindsay considers meeting her estranged father.

Investigators are drawn into the dark world of high-end prostitution, illegal aliens and Russian organized crime.

Ontario police conduct a manhunt for the prime suspects in four brutal murders.

A nurse is the main suspect of five bodies found in a wooded area in central Florida.

A man dies in a fire set by a troubled teenager; Severide contacts his father; Otis fills in for some shifts at the slowest firehouse in the city; Shay and Dawson wind up in a bad situation.

Severide realizes he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay; Casey faces family issues.

Dawson turns to an unlikely source for assistance as she tries to help her brother; Severide does a favor for Lt. Whaley; Herrmann and Otis make tough discoveries about their silent partner.

Cruz puts himself and his fellow firefighters in danger; Casey tries to resolve issues with his sister and mother; the team assists the bomb squad with a dangerous call.

When Severide's father (Treat Williams) visits, he clashes with Chief Boden over a former colleague's death; Shay makes a decision about Clarice; the mystery about Herrmann, Otis and Dawson's bar is revealed.

Mills questions Bennie about the fire that killed Mills' father; Casey, Severide and Bennie investigate two mysterious diner fires.

A failed rescue attempt deeply affects the men and women of firehouse 51; Dawson and Shay deal with a junkie's crazy behavior during a call; the team upsets local drug dealers.

A man dies in a fire set by a troubled teenager; Severide contacts his father; Otis fills in for some shifts at the slowest firehouse in the city; Shay and Dawson wind up in a bad situation.

Severide realizes he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay; Casey faces family issues.

Dawson turns to an unlikely source for assistance as she tries to help her brother; Severide does a favor for Lt. Whaley; Herrmann and Otis make tough discoveries about their silent partner.

Cruz puts himself and his fellow firefighters in danger; Casey tries to resolve issues with his sister and mother; the team assists the bomb squad with a dangerous call.

When Severide's father (Treat Williams) visits, he clashes with Chief Boden over a former colleague's death; Shay makes a decision about Clarice; the mystery about Herrmann, Otis and Dawson's bar is revealed.

Mills questions Bennie about the fire that killed Mills' father; Casey, Severide and Bennie investigate two mysterious diner fires.

A failed rescue attempt deeply affects the men and women of firehouse 51; Dawson and Shay deal with a junkie's crazy behavior during a call; the team upsets local drug dealers.

A man dies in a fire set by a troubled teenager; Severide contacts his father; Otis fills in for some shifts at the slowest firehouse in the city; Shay and Dawson wind up in a bad situation.

Severide realizes he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay; Casey faces family issues.

Dawson turns to an unlikely source for assistance as she tries to help her brother; Severide does a favor for Lt. Whaley; Herrmann and Otis make tough discoveries about their silent partner.

Cruz puts himself and his fellow firefighters in danger; Casey tries to resolve issues with his sister and mother; the team assists the bomb squad with a dangerous call.

When Severide's father (Treat Williams) visits, he clashes with Chief Boden over a former colleague's death; Shay makes a decision about Clarice; the mystery about Herrmann, Otis and Dawson's bar is revealed.

Investigators are drawn into the dark world of high-end prostitution, illegal aliens and Russian organized crime.

Ontario police conduct a manhunt for the prime suspects in four brutal murders.

A couple moves to the country and ruins the quiet their new neighbors have enjoyed for years; parties, loud kids, and a junk-strewn lawn push the Vietnam vet next door to build a fence, but violence boils over when property lines are disputed.

A search mission for three women missing in Yosemite Park turns to a murder investigation when two are discovered in the trunk of their burned out car.

The team must diffuse a volatile situation when a student pushed to the limit by bullies brings a gun to school.

A couple moves to the country and ruins the quiet their new neighbors have enjoyed for years; parties, loud kids, and a junk-strewn lawn push the Vietnam vet next door to build a fence, but violence boils over when property lines are disputed.

A search mission for three women missing in Yosemite Park turns to a murder investigation when two are discovered in the trunk of their burned out car.

The team must diffuse a volatile situation when a student pushed to the limit by bullies brings a gun to school.

A couple moves to the country and ruins the quiet their new neighbors have enjoyed for years; parties, loud kids, and a junk-strewn lawn push the Vietnam vet next door to build a fence, but violence boils over when property lines are disputed.

The team must diffuse a volatile situation when a student pushed to the limit by bullies brings a gun to school.

A search mission for three women missing in Yosemite Park turns to a murder investigation when two are discovered in the trunk of their burned out car.

A paramedic candidate joins Shay and Dawson for a few shifts; Cindy Herrmann experiences pregnancy complications while her husband is out of town; Casey receives an unexpected visit.

Detective Voight shows up, looking to cash in the favor Dawson owes him; Casey's social life takes on a familiar pattern; Molly prepares for the grand opening of Dawson, Herrmann and Otis's bar; Severide faces a threat to his career.

Severide is accused of sexual misconduct; Casey starts to find satisfaction in his personal life; Dawson and Mills face challenges as they try to take their relationship to the next level; the squad faces a harrowing building collapse.

Lt. Casey must work with Voight and the Intelligence Unit; Shay grows increasingly excited about the prospect of motherhood; everyone comes together to support the opening of Molly's.

The squad must help defuse a volatile situation at the jail; Shay continues to be hopeful about motherhood; Herrmann's wife goes into labor; Mills and Dawson face important decisions.

Lt. Severide is targeted by an arsonist; Battalion Chief Boden clashes with Gail McLeod; the anniversary of Andy's death; Shay has suspicions; Mari visits Mouch.

Kelly is shocked to discover the truth about Bazi; as she heads to the illegal beach rave on the remote Hilbre Island, Kelly's threats place her in danger.

The Club St. Clair opens, but Bumpy has to pay Colombo a tax; Frank seeks protection from the Italians trying to kill him; Colombo responds to FBI harassment; Sadiq opens up to Elise; Mayme faces a financial obstacle to joining the Fine Arts Board.

Fred Straub returns to sue Bumpy for ownership of the St. Clair, but this time, he's backed by the Italian Mob; the Panthers intervene when Delia's son is drafted to Vietnam; Colombo makes an interesting proposal to Stella.

Severide is accused of sexual misconduct; Casey starts to find satisfaction in his personal life; Dawson and Mills face challenges as they try to take their relationship to the next level; the squad faces a harrowing building collapse.

Lt. Casey must work with Voight and the Intelligence Unit; Shay grows increasingly excited about the prospect of motherhood; everyone comes together to support the opening of Molly's.

Kelly is shocked to discover the truth about Bazi; as she heads to the illegal beach rave on the remote Hilbre Island, Kelly's threats place her in danger.

The Club St. Clair opens, but Bumpy has to pay Colombo a tax; Frank seeks protection from the Italians trying to kill him; Colombo responds to FBI harassment; Sadiq opens up to Elise; Mayme faces a financial obstacle to joining the Fine Arts Board.

Fred Straub returns to sue Bumpy for ownership of the St. Clair, but this time, he's backed by the Italian Mob; the Panthers intervene when Delia's son is drafted to Vietnam; Colombo makes an interesting proposal to Stella.

Two neighbors are the best of friends, but the relationship sours when one accuses the other of stealing from him; tensions rise after constant surveillance, accusations of snitching and a literal backstabbing, ending in a deadly on-camera shooting.

Police search for the killer of an elderly upscale Toronto couple.

The team must track down a young woman dying of a brain disease when she and her fiance go on a crime spree.

Two neighbors are the best of friends, but the relationship sours when one accuses the other of stealing from him; tensions rise after constant surveillance, accusations of snitching and a literal backstabbing, ending in a deadly on-camera shooting.

Police search for the killer of an elderly upscale Toronto couple.

The team must track down a young woman dying of a brain disease when she and her fiance go on a crime spree.

Two neighbors are the best of friends, but the relationship sours when one accuses the other of stealing from him; tensions rise after constant surveillance, accusations of snitching and a literal backstabbing, ending in a deadly on-camera shooting.

The team must track down a young woman dying of a brain disease when she and her fiance go on a crime spree.

Police search for the killer of an elderly upscale Toronto couple.

Scott's loyalty to Med and the police department is challenged; the annual random drug testing puts a doctor's career in jeopardy; Choi tries a risky old-school method on a patient; Halstead helps Hammer search for her mother.

The outcome of Halstead's investigation weighs heavily on his mind as he works with Scott to save an infant; Hammer and Taylor both struggle to keep their secrets; Marcel and Blake work with Abrams to save a patient in need of a liver transplant.

In the aftermath of the Vas-COM scandal, Goodwin clashes with the hospital's new compliance officer; Marcel and Blake try to save a patient who has a son with severe autism; a patient's son lies to his father about his diagnosis.

Marcel and Blake clash with Shentu when a famous football player needs a liver transplant; Scott is reunited with old friends when their son breaks his arm; Hammer and Charles work together when a patient falls ill after back-alley plastic surgery.

Halstead and Hammer get stuck in the middle of a marital face-off; Blake's entire surgical team mysteriously collapses during a liver transplant; Charles encourages Choi to reconcile with his father.

Scott and Archer diagnose a pregnant woman with a serious infection; Maggie receives shocking news; Halstead and Charles question an elderly patient's Alzheimer's diagnosis; in an effort to help a patient, Marcel takes a risk.

Goodwin assigns Med's new compliance officer to a patient with a long-hauler COVID condition; Maggie helps Halstead treat a patient who's been in an iron lung for 60 years; Hammer learns hard truths about her mother.

Scott's loyalty to Med and the police department is challenged; the annual random drug testing puts a doctor's career in jeopardy; Choi tries a risky old-school method on a patient; Halstead helps Hammer search for her mother.

The outcome of Halstead's investigation weighs heavily on his mind as he works with Scott to save an infant; Hammer and Taylor both struggle to keep their secrets; Marcel and Blake work with Abrams to save a patient in need of a liver transplant.

In the aftermath of the Vas-COM scandal, Goodwin clashes with the hospital's new compliance officer; Marcel and Blake try to save a patient who has a son with severe autism; a patient's son lies to his father about his diagnosis.

Marcel and Blake clash with Shentu when a famous football player needs a liver transplant; Scott is reunited with old friends when their son breaks his arm; Hammer and Charles work together when a patient falls ill after back-alley plastic surgery.

Halstead and Hammer get stuck in the middle of a marital face-off; Blake's entire surgical team mysteriously collapses during a liver transplant; Charles encourages Choi to reconcile with his father.

Scott and Archer diagnose a pregnant woman with a serious infection; Maggie receives shocking news; Halstead and Charles question an elderly patient's Alzheimer's diagnosis; in an effort to help a patient, Marcel takes a risk.

Goodwin assigns Med's new compliance officer to a patient with a long-hauler COVID condition; Maggie helps Halstead treat a patient who's been in an iron lung for 60 years; Hammer learns hard truths about her mother.

Scott's loyalty to Med and the police department is challenged; the annual random drug testing puts a doctor's career in jeopardy; Choi tries a risky old-school method on a patient; Halstead helps Hammer search for her mother.

Friendly neighbors on a peaceful street have their lives disrupted when a developer moves in and builds houses nearby; tempers flare over the access road he uses for heavy equipment, which fuels escalating threats and confrontations.

The largest police investigation of the decade lasted 23 days to catch a sniper who terrorized Washington, D. C. residents.

The team tries to end a standoff at a hospital between gang members and a man trying to protect his injured brother.

Friendly neighbors on a peaceful street have their lives disrupted when a developer moves in and builds houses nearby; tempers flare over the access road he uses for heavy equipment, which fuels escalating threats and confrontations.

The largest police investigation of the decade lasted 23 days to catch a sniper who terrorized Washington, D. C. residents.

The team tries to end a standoff at a hospital between gang members and a man trying to protect his injured brother.

Friendly neighbors on a peaceful street have their lives disrupted when a developer moves in and builds houses nearby; tempers flare over the access road he uses for heavy equipment, which fuels escalating threats and confrontations.

The team tries to end a standoff at a hospital between gang members and a man trying to protect his injured brother.

The largest police investigation of the decade lasted 23 days to catch a sniper who terrorized Washington, D. C. residents.

A stunt driver is caught in a hairy situation; a teenage social influencer is bugging out; the city is on high alert after two mail bombs go off; Eddie's family comes to town; Buck faces a life-or-death situation.

A teenager speeds out of control on the freeway; a routine traffic stop uncovers a shocking kidnapping; Buck struggles with his recovery.

A massive tsunami hits the Santa Monica Pier, jeopardizing the lives of both Buck and Christopher.

A massive tsunami hits the Santa Monica Pier; Buck fears the worst when Christopher goes missing.

The team races to save workers in a high-rise during a fire drill, car accident victims, and siblings fighting over a family heirloom; Buck gives Bobby surprising news; Eddie helps Christopher deal with the trauma caused by the tsunami.

The 118 races to help protesters at a slaughterhouse and a wife who finds herself trapped in a "rage room" with her husband's mistress; Athena takes action after Michael, May and Harry experience a traumatic traffic stop.

The rift between Cal and Maggie widens as Liam decides he's staying at the Crossing.

Athena and the 118 respond to bizarre emergency calls on Halloween, including a flock of crows terrorizing a field trip, an office employee having a close encounter with an eight-limbed creature and a ghost-like girl wandering a neighborhood.

A teenager speeds out of control on the freeway; a routine traffic stop uncovers a shocking kidnapping; Buck struggles with his recovery.

A massive tsunami hits the Santa Monica Pier, jeopardizing the lives of both Buck and Christopher.

A massive tsunami hits the Santa Monica Pier; Buck fears the worst when Christopher goes missing.

The team races to save workers in a high-rise during a fire drill, car accident victims, and siblings fighting over a family heirloom; Buck gives Bobby surprising news; Eddie helps Christopher deal with the trauma caused by the tsunami.

The 118 races to help protesters at a slaughterhouse and a wife who finds herself trapped in a "rage room" with her husband's mistress; Athena takes action after Michael, May and Harry experience a traumatic traffic stop.

The rift between Cal and Maggie widens as Liam decides he's staying at the Crossing.

A stunt driver is caught in a hairy situation; a teenage social influencer is bugging out; the city is on high alert after two mail bombs go off; Eddie's family comes to town; Buck faces a life-or-death situation.

A mother and daughter upscale their lives when they move into a beautiful suburban community; their next door neighbor takes an instant dislike to them and tensions rise until a vicious murder is caught on home video.

When an unidentified burned corpse is found in a field, state-of-the-art forensics is turned to.

While broadcasting live, a notorious radio-show host holds a prominent politician hostage.

A mother and daughter upscale their lives when they move into a beautiful suburban community; their next door neighbor takes an instant dislike to them and tensions rise until a vicious murder is caught on home video.

When an unidentified burned corpse is found in a field, state-of-the-art forensics is turned to.

While broadcasting live, a notorious radio-show host holds a prominent politician hostage.

A mother and daughter upscale their lives when they move into a beautiful suburban community; their next door neighbor takes an instant dislike to them and tensions rise until a vicious murder is caught on home video.

While broadcasting live, a notorious radio-show host holds a prominent politician hostage.

When an unidentified burned corpse is found in a field, state-of-the-art forensics is turned to.

Scott suspects his patient may be a drug dealer; Halstead must decide how to spend his whistleblower settlement; Charles and Taylor help a patient who believes she's infested with parasites; Marcel and Blake are paired with an arrogant surgeon.

Halstead helps a patient with long-haul COVID-19 symptoms; Taylor reflects on her dating life when she learns that a patient's daughter is having an arranged marriage; a new family is born out of tragedy.

Rival gangs bring their war to Med; Halstead and Charles work with a teenage brain cancer patient who's refusing treatment; tensions run high in the OR when a patient's transplanted uterus fails.

Archer and Asher clash over a patient with close ties to Goodwin; after a patient is shot during a home invasion, Scott and Marcel help with the investigation; Maggie and Halstead work to protect a patient who is in the country illegally.

Halstead and Asher work to save a surrogate's baby; Charles cares for a patient on a hunger strike; Choi and Archer help a patient with ties to Choi's late father; Scott and Maggie are stumped by a drunken patient who claims to be sober.

Scott helps the daughter of a mob boss; a grandmother comes to Med desperate to save her grandson; Choi struggles with some shocking news about his father; Halstead and Taylor care for Maggie's high school classmate.

Twenty-one-year-old Kanako Ohyama is found dead in New Orleans; police use her journal and photos to uncover the truth behind her murder.

In 2017, Tynesha Stewart vanishes on spring break; a missed concert sparks a search that uncovers a chilling murder and a key suspect.

Halstead helps a patient with long-haul COVID-19 symptoms; Taylor reflects on her dating life when she learns that a patient's daughter is having an arranged marriage; a new family is born out of tragedy.

Rival gangs bring their war to Med; Halstead and Charles work with a teenage brain cancer patient who's refusing treatment; tensions run high in the OR when a patient's transplanted uterus fails.

Archer and Asher clash over a patient with close ties to Goodwin; after a patient is shot during a home invasion, Scott and Marcel help with the investigation; Maggie and Halstead work to protect a patient who is in the country illegally.

Halstead and Asher work to save a surrogate's baby; Charles cares for a patient on a hunger strike; Choi and Archer help a patient with ties to Choi's late father; Scott and Maggie are stumped by a drunken patient who claims to be sober.

Scott helps the daughter of a mob boss; a grandmother comes to Med desperate to save her grandson; Choi struggles with some shocking news about his father; Halstead and Taylor care for Maggie's high school classmate.

Twenty-one-year-old Kanako Ohyama is found dead in New Orleans; police use her journal and photos to uncover the truth behind her murder.

In 2017, Tynesha Stewart vanishes on spring break; a missed concert sparks a search that uncovers a chilling murder and a key suspect.

A beautiful hamlet is home to a resident regarded as a pillar of the community; in reality, he is a twisted criminal bent on ruling the kingdom he has built and all who live in it; when his world crumbles, his retribution is violent beyond belief.

A serial rapist stalks elderly women for nearly 20 years before escalating to murder.

A wave of terrorist bombs shuts down the city; a member of the team makes a sacrifice.

A beautiful hamlet is home to a resident regarded as a pillar of the community; in reality, he is a twisted criminal bent on ruling the kingdom he has built and all who live in it; when his world crumbles, his retribution is violent beyond belief.

A serial rapist stalks elderly women for nearly 20 years before escalating to murder.

A wave of terrorist bombs shuts down the city; a member of the team makes a sacrifice.

A beautiful hamlet is home to a resident regarded as a pillar of the community; in reality, he is a twisted criminal bent on ruling the kingdom he has built and all who live in it; when his world crumbles, his retribution is violent beyond belief.

A wave of terrorist bombs shuts down the city; a member of the team makes a sacrifice.

A serial rapist stalks elderly women for nearly 20 years before escalating to murder.

A deadly threat strikes close to home, pulling Lena, Danny and the team into an intense investigation; Mae faces a political and personal reckoning, prompting a revelation that pushes Lena toward a life-changing decision.

Officer Bradford's wife is found shot but alive, and he vows to track down the man responsible; Officer Nolan must protect his home and the truth after a home invasion attack.

Officer Nolan and Sgt. Grey are paired up for the day on patrol; Officer Chen is paired up with Capt. Andersen, and Officer Bradford tells Chen to protect her at all costs.

An unscheduled visit by the Vice President of the United States puts the station on high alert; the Secret Service tasks Nolan and Bishop with checking out a possible threat while the rest of the team tries to keep the streets safe for his visit.

The team is on high alert during the most dangerous day of the year, Valentine's Day; officer Nolan invites everyone over for a party now that he is single.

A deadly threat strikes close to home, pulling Lena, Danny and the team into an intense investigation; Mae faces a political and personal reckoning, prompting a revelation that pushes Lena toward a life-changing decision.

Colter and Russell unite in a personal mission to uncover their father's mysterious work.

The rookies are really put to the test when they are forced to make all decisions while on patrol; officer Nolan tries to prove he has been progressing faster than the other rookies to justify his desire of becoming a detective within five years.

Officer Bradford's wife is found shot but alive, and he vows to track down the man responsible; Officer Nolan must protect his home and the truth after a home invasion attack.

Colter and Russell unite in a personal mission to uncover their father's mysterious work.

An unscheduled visit by the Vice President of the United States puts the station on high alert; the Secret Service tasks Nolan and Bishop with checking out a possible threat while the rest of the team tries to keep the streets safe for his visit.

The team is on high alert during the most dangerous day of the year, Valentine's Day; officer Nolan invites everyone over for a party now that he is single.

When a prison bus crashes, some inmates face severe injuries while others seek an opportunity to flee; in the wake of the accident, officer Nolan tries to impress an FBI hostage negotiator while tracking down an escaped convict.

A large sum of money used in a drug bust goes missing; the rookies become the prime suspects, as they had previously discussed what they would do with the money.

Officer Nolan gets a lesson in respect after his arrest of a gang member leads to a free-for-all on his life; officer Chen and Bradford pull over Mario Lopez, who thinks he can talk his way out of a traffic violation.

A sniper targeting abortion doctors turns murderous and a DNA "needle in a haystack" identifies the gunman.

A small town encounters satanic rituals and a savage killer.

Top criminal investigators, forensic scientists and behavioral analysts track three serial killers.

Evidence from the case of a young woman who was shot to death confirms the Chicago P.D. has a serial killer on its hands; Voight welcomes Kenny Rixton to the team when Ruzek takes another assignment.

The investigation into the murder of a sex offender leads to a private police force operating independently of the Chicago PD; Halstead checks Jimmy's DNA to find out if he really is Lindsay's father.

A priest and parishioners block law enforcement from entering a church where two murder suspects are suspected of hiding; Rixton is caught in a lie with Voight.

When the crushed body of a young teen who ran away from a treatment center for troubled girls is found in an abandoned building, Voight sends Halstead undercover as a guard to investigate the center from the inside.

The team investigates a home explosion that left a charred body, one injured survivor and no witnesses; Lindsay and Halstead receive a strange warning about Rixton.

Olinsky goes undercover as a hit man for hire after Lindsay is tipped off about a grieving father looking to avenge his daughter's death; when Ruzek returns from his undercover assignment, Voight puts him on patrol duty.

Olinsky's daughter is in critical condition following a massive warehouse fire; Voight investigates the fire's potential origins; intelligence examines connections between the building owner, those who were inside, and potential arson suspects.

Evidence from the case of a young woman who was shot to death confirms the Chicago P.D. has a serial killer on its hands; Voight welcomes Kenny Rixton to the team when Ruzek takes another assignment.

The investigation into the murder of a sex offender leads to a private police force operating independently of the Chicago PD; Halstead checks Jimmy's DNA to find out if he really is Lindsay's father.

A priest and parishioners block law enforcement from entering a church where two murder suspects are suspected of hiding; Rixton is caught in a lie with Voight.

When the crushed body of a young teen who ran away from a treatment center for troubled girls is found in an abandoned building, Voight sends Halstead undercover as a guard to investigate the center from the inside.

Colter and Russell unite in a personal mission to uncover their father's mysterious work.

Twenty-one-year-old Kanako Ohyama is found dead in New Orleans; police use her journal and photos to uncover the truth behind her murder.

In 2017, Tynesha Stewart vanishes on spring break; a missed concert sparks a search that uncovers a chilling murder and a key suspect.

Evidence from the case of a young woman who was shot to death confirms the Chicago P.D. has a serial killer on its hands; Voight welcomes Kenny Rixton to the team when Ruzek takes another assignment.

The investigation into the murder of a sex offender leads to a private police force operating independently of the Chicago PD; Halstead checks Jimmy's DNA to find out if he really is Lindsay's father.

A priest and parishioners block law enforcement from entering a church where two murder suspects are suspected of hiding; Rixton is caught in a lie with Voight.

When the crushed body of a young teen who ran away from a treatment center for troubled girls is found in an abandoned building, Voight sends Halstead undercover as a guard to investigate the center from the inside.

The team investigates a home explosion that left a charred body, one injured survivor and no witnesses; Lindsay and Halstead receive a strange warning about Rixton.

Olinsky goes undercover as a hit man for hire after Lindsay is tipped off about a grieving father looking to avenge his daughter's death; when Ruzek returns from his undercover assignment, Voight puts him on patrol duty.

Olinsky's daughter is in critical condition following a massive warehouse fire; Voight investigates the fire's potential origins; intelligence examines connections between the building owner, those who were inside, and potential arson suspects.

Knowledge of insects by a forensic entomologist leads police to the killer of a wife and mother of two.

A serial killer in Spokane, Wash. murders prostitutes and leaves a bag with a smiley face on the victim's head.

Officials look to state-of-the-art DNA analysis to help capture a serial killer in the Louisiana State University area of Baton Rouge.

Casey struggles with his new responsibilities; Severide dreads the arsonist's next attack; Mouch starts campaigning; Dawson and Shay decide they need to get out more.

Severide tries to prove his suspicions about the arsonist's identity; Casey gets accustomed to his new lifestyle; Dawson goes on a date with a regular from the bar.

Severide wants to implicate the serial arsonist; Dawson and Shay face the unexpected on a routine call; suspicions indicate Clarke is the mole; Mouch campaigns for union president.

McLeod pushes Boden toward an early retirement and chooses a potential replacement; all make known their disdain for the mole; Shay enjoys a full social life.

Severide comes across a boy in need of help while out on a jog; Boden and McLeod clash over the future of the firehouse; Mouch and Greg Sullivan debate on Otis' podcast.

The firehouse crew goes to the scene of a railroad accident; Boden must make a big decision about his future; Severide learns more about the woman he saw with his father; Shay and Dawson continue to butt heads.

The shooting of a child in their neighborhood forces Cruz and his brother to think about the gang; Isabella gets Mills to dress up for a gala; Casey feels sad he will be seeing Dawson less; Shay gets in deeper with Devon.

Casey struggles with his new responsibilities; Severide dreads the arsonist's next attack; Mouch starts campaigning; Dawson and Shay decide they need to get out more.

Severide tries to prove his suspicions about the arsonist's identity; Casey gets accustomed to his new lifestyle; Dawson goes on a date with a regular from the bar.

Severide wants to implicate the serial arsonist; Dawson and Shay face the unexpected on a routine call; suspicions indicate Clarke is the mole; Mouch campaigns for union president.

McLeod pushes Boden toward an early retirement and chooses a potential replacement; all make known their disdain for the mole; Shay enjoys a full social life.

Severide comes across a boy in need of help while out on a jog; Boden and McLeod clash over the future of the firehouse; Mouch and Greg Sullivan debate on Otis' podcast.

The firehouse crew goes to the scene of a railroad accident; Boden must make a big decision about his future; Severide learns more about the woman he saw with his father; Shay and Dawson continue to butt heads.

The shooting of a child in their neighborhood forces Cruz and his brother to think about the gang; Isabella gets Mills to dress up for a gala; Casey feels sad he will be seeing Dawson less; Shay gets in deeper with Devon.

Casey struggles with his new responsibilities; Severide dreads the arsonist's next attack; Mouch starts campaigning; Dawson and Shay decide they need to get out more.

Severide tries to prove his suspicions about the arsonist's identity; Casey gets accustomed to his new lifestyle; Dawson goes on a date with a regular from the bar.

Severide wants to implicate the serial arsonist; Dawson and Shay face the unexpected on a routine call; suspicions indicate Clarke is the mole; Mouch campaigns for union president.

McLeod pushes Boden toward an early retirement and chooses a potential replacement; all make known their disdain for the mole; Shay enjoys a full social life.

Severide comes across a boy in need of help while out on a jog; Boden and McLeod clash over the future of the firehouse; Mouch and Greg Sullivan debate on Otis' podcast.

Knowledge of insects by a forensic entomologist leads police to the killer of a wife and mother of two.

A serial killer in Spokane, Wash. murders prostitutes and leaves a bag with a smiley face on the victim's head.

A family moves one house over and closer to neighbors they've been friendly with for years; however, things go sour when they start renovations; the noise and waste ignite a vicious feud, ending in a frenzy of bullets and bloodshed.

Investigating a series of fires in California's Sam Joaquin Valley that killed four, investigators determine a respected arson investigator may be the arsonist.

A delusional man kidnaps a waitress who resembles his missing daughter; a woman joins the SRU team after the death of one of the unit's members.

A family moves one house over and closer to neighbors they've been friendly with for years; however, things go sour when they start renovations; the noise and waste ignite a vicious feud, ending in a frenzy of bullets and bloodshed.

Investigating a series of fires in California's Sam Joaquin Valley that killed four, investigators determine a respected arson investigator may be the arsonist.

A delusional man kidnaps a waitress who resembles his missing daughter; a woman joins the SRU team after the death of one of the unit's members.

A family moves one house over and closer to neighbors they've been friendly with for years; however, things go sour when they start renovations; the noise and waste ignite a vicious feud, ending in a frenzy of bullets and bloodshed.

A delusional man kidnaps a waitress who resembles his missing daughter; a woman joins the SRU team after the death of one of the unit's members.

Investigating a series of fires in California's Sam Joaquin Valley that killed four, investigators determine a respected arson investigator may be the arsonist.

Boden tries to keep the firehouse from closing; the romance between Dawson and Casey grows; Cruz worries about his brother's safety; Severide and Katie make up for lost time.

Chief Boden leads the fight to keep the firehouse open; an emergency call to an apartment structure puts the squad in harm's way; Dawson receives life-changing news.

Casey returns to work after a brush with death; Shay's new partner is friendly to everyone but her; Dawson begins training; Severide prepares for his instructor duties; Clarke refuses to talk to the police about the murder.

Casey tries to convince everyone he is healthy; Shay avoids the lawyer who wants to talk about Daryl's suicide; Otis and Katie grow closer; Boden helps a woman with a negligent landlord.

A drunken driver takes out a transformer, leaving the entire neighborhood without power on a frigid night; Casey continues to lie about his condition.