When an illegal arms broker-turned-informant is assassinated, OA assumes his identity and goes under cover to stop the sale of dangerous weapons, with help from Maggie and their former FBI instructor.

First-class agents bring all of their talents, intellect and technical expertise to tenaciously investigate cases of tremendous magnitude, including terrorism, organized crime and counterintelligence, to keep New York -- and the country -- safe.

When a judge and her daughter are murdered after she sentences a man to life in prison, Maggie and OA search for the killer; Dana has a history with the victim and a vested interest in the case.

First-class agents bring all of their talents, intellect and technical expertise to tenaciously investigate cases of tremendous magnitude, including terrorism, organized crime and counterintelligence, to keep New York -- and the country -- safe.

When an alt-right provocateur is murdered after giving a speech at a university in New York City, Maggie and OA investigate the school's more extreme political groups and rely on OA's sister, a student, for help.

First-class agents bring all of their talents, intellect and technical expertise to tenaciously investigate cases of tremendous magnitude, including terrorism, organized crime and counterintelligence, to keep New York -- and the country -- safe.

Maggie and OA must find a couple that is responsible for a spree of violent armed robberies that led to the death of an off-duty police officer.

Doctors deal with personal and professional crises as they labor to save lives in the emergency room at County General Hospital in Chicago.

Doctors deal with personal and professional crises as they labor to save lives in the emergency room at County General Hospital in Chicago.

Doctors deal with personal and professional crises as they labor to save lives in the emergency room at County General Hospital in Chicago.

Dr. Weaver is in a difficult situation when an influential alderman tests positive for syphilis; Dr. Carter is impressed when he meets a man (Ed Asner) who runs an inner-city clinic.

Doctors deal with personal and professional crises as they labor to save lives in the emergency room at County General Hospital in Chicago.

Doctors deal with personal and professional crises as they labor to save lives in the emergency room at County General Hospital in Chicago.

Doctors deal with personal and professional crises as they labor to save lives in the emergency room at County General Hospital in Chicago.

When a series of backyard pool homicides are reported in California, the BAU team searches for an UnSub which has a puzzling past.

The BAU team's investigation into the home invasion and attempted homicide of a police chief's wife uncovers a world of secrets in a small town in Virginia.

The BAU is called to New York when several casualties of a brutal nature are reported in Central Park.

The BAU is called to investigate a series of homicides in which cryptic messages are found inside the mouths of the victims.

The BAU is called when the New Orleans Police Department discovers a mass grave inside a vandalized above-ground crypt in a local cemetery.

The FBI's assistant director of national security joins the BAU as it investigates the quadruple homicide of a group of roommates in St. Louis.

The BAU meets in secret to investigate a subject who appears to be kidnapping and photographing young women.

The BAU is called to Oklahoma to investigate a murderous clown who is terrorizing a town.

After Eddie Barrett provides an alibi witness, Pride and the team are more determined than ever to find a break in the case and avenge Lasalle's murder.

Pride is cut off from the team and backed into a corner after the investigation into Eddie Barrett uncovers a malicious plot.

The team is concerned when Sebastian becomes unreachable while under cover as a new recruit.

The team must track down a mysterious female assassin responsible for murders in Athens, Rome and London; Wade's son begs her to allow him to go on a police ride-along for an article he's writing on a youth outreach program.

After an investigative journalist is murdered, the team uncovers information linking the suspect to past cases; the victim's death strikes a chord with Maggie, leaving her desperate for answers in regard to a traumatic event in her personal life.

A serial bomber appears to be targeting Wall Street's elite; Maggie and OA search for a suspect who seems set on revenge; Dana deals with Spencer Briggs, a cocky profiler brought in to consult on the case.

The daughter of a wealthy family is kidnapped in an attempt to gain notorious internet fame; Maggie and OA discover the kidnapper's plans go far beyond abduction.

Maggie and Dana struggle to find justice for victims murdered by a serial killer; the mayor limits the investigation to cut costs.

OA and Maggie team up with members of the FBI's Fugitives Department to track down a person wanted for murder who is also on America's Top 10 Most Wanted list.

The team must take down a dangerous drug ring after an American diplomat is killed while being used as a pawn; Jubal and OA try to help friends from their past fight off their inner demons.

When a controversial senior leader from Egypt comes to New York for a heart transplant, OA struggles to balance his personal opinion with his professional duty when he is assigned to the security detail.

Abby comes close to a breakdown while dealing with her mother (Sally Field); Pratt accompanies paramedics; Weaver confronts the man who stole her purse; Lewis has a teenage admirer (Patrick Fugit).

The police question Drs. Pratt and Gallant in regard to a rampage at the diner near the hospital; Dr. Lewis befriends a teenage cancer patient (Patrick Fugit) who is smitten with her.

Dr. Weaver bends the rules to treat Alderman Bright's lover for syphilis; Kovac's patient says she was sexually abused at a boot camp for wayward youths; Carter treats a middle-aged woman with a nasty disposition.

Dr. Romano seizes control of the emergency room and offends nearly everyone; Kovac enlists Corday's help in his quest to bring a sickly Croatian boy to the United States for medical attention.

A psychotic patient threatens Abby; Dr. Weaver suspects a woman poisoned her own baby; Dr. Romano continues to make rash judgments.

Carter tries to prevent a grieving gang member from seeking vengeance; Kovac races against the clock to save a Croatian boy's life; a baseball player receives treatment for a heart ailment.

The BAU travels to Chicago to investigate a case where red roses are left on victims; Rossi gets an unexpected visit from his ex-wife.

The BAU takes charge of a hostage situation at a law firm where Matt Simmons' wife works.

The BAU is called upon when bioterrorism is suspected in a series of mysterious deaths; Garcia visits her stepbrother to take care of a difficult family issue.

The BAU is called to Taos, N.M., when someone targets victims' temporal lobes.

The team questions the credibility of a former FBI agent's bizarre account.

When Reid and Garcia are abducted by a mass murderer, it's up to the rest of the team to find them; the BAU looks to their past to solve why the two heroes have been targeted.

The team tracks a serial killer when remains of numerous victims are found in the walls of an elderly couple's home; the hunt becomes urgent after the BAU learns the killer's specific ritual of when to strike; Rossi reconnects with his ex-wife.

Packages with gruesome contents are delivered to six people in the Washington, D.C.. area; Simmons and Kristy struggle to connect with their son, David, who is suspended from school for aggressive behavior.

The team investigates the murder of a JAG captain who was discovered at home by his daughter, the only heir to his large estate; Sebastian is intimidated when he is put in charge of a team on his first day of training.

When Pride is unable to sleep due to continuing nightmares about the mysterious man in the red suit, he undergoes a specialized treatment to help him figure out the man's identity; an arrogant new officer joins the team.

Tammy must protect a teenage girl after her father is shot in their home; the rest of the team searches for a motive.

When a man impersonating Lasalle attempts to free a young woman from jail, the team investigates both the impostor and the prisoner; Pride's daughter pays him a surprise visit.

After a decorated FBI agent is murdered, the team investigates and learns that the man led a double life; Maggie struggles with what information she should reveal to the agent's widow, who is also her personal friend.

A woman who has information about the death of Maggie's husband is abducted, leading OA and the team to uncover a criminal operation larger than anyone imagined; Dana puts her career in jeopardy when she allows Maggie to work on the case.

After a bomb detonates at a restaurant in Queens, the case becomes personal for OA, who grew up eating there; OA goes under cover to prevent another incident.

After the son of a prominent blogger is kidnapped, the team must sweep through her two million followers to find the culprit; Kristen continues to adjust to life as a field agent with her new partner Stuart Scola.

After a female presidential candidate, Valerie Caldwell, is targeted with a car bomb, OA and Maggie must find them before they strike again; the case leads them to wonder if she is being targeted for her political aspirations or something else.

After a shooting at a nightclub, it appears that the FBI may have ignored previous threats from a local white supremacist group; Kristen wrestles with her commitment to the bureau and her responsibility to her community.

When a legal aid striker is killed outside the courthouse, the sand in his wounds leads detectives to investigate a greensman; due to the strike and shortage of defense attorneys, Rubirosa and Cutter must face each other in court.

The murder of an automobile mechanic leads detectives to uncover a fraudulent online relationship, a bizarre case of blackmail and money laundering.

The murder of a jeweler leads detectives to an illegal prostitution ring; Jack McCoy's job is threatened.

The beating death of a stockbroker causes a battle of epic proportions between the victim's family and the faction responsible for his death.

A mentally challenged man is reunited with his mother, who gave him away after his brother was killed.

A young woman (guest star Jena Malone) escapes from a polygamous cult.

A crane collapse kills a man, and it may not have been an accident; a rift forms between Jack McCoy and Michael Cutter.

A revered sheriff becomes a possible conspirator in a case involving a murdered tourist.

Detectives Lupo and Bernard investigate when the writer of a best-selling memoir is found dead in a community of male prostitutes.

Cutter is determined to expose misconduct when he realizes an old friend working in the system is obstructing justice in the murder of an environmentalist.

While investigating the murder of two divorce lawyers, detectives Lupo and Bernard uncover a child slave-trade ring.

The murder of the plaintiff in a high-profile lawsuit against a major airline leads detectives to a defense attorney (Dallas Roberts) who is willing to do whatever it takes to ensure his big payday.

When the son and housekeeper of a pair of prominent biologists are murdered, detectives suspect the couple's work on a controversial pharmaceutical study may have made them targets for the killer.

The owner of a trucking company, Vic Russell, is found dead after a business meeting; detectives uncover information that leads them to believe that Russell had ties to the Russian mob.

Raised by their aunts, two sisters (Sandra Bullock, Nicole Kidman) use different means to avoid a family legacy of witchcraft.

A slain Manhattan yuppie (Patrick Swayze) reaches out to his lover (Demi Moore), with a medium (Whoopi Goldberg) as his middlewoman.

Raised by their aunts, two sisters (Sandra Bullock, Nicole Kidman) use different means to avoid a family legacy of witchcraft.

The night and day shifts of Drs. Pratt and Carter; a burned firefighter, poisoned cult members and a wounded gang-member cause frustration amongst the doctors during a solar eclipse.

Drs. Carter and Kovac vaccinate people at an outpost in Congo, where they find themselves in the line of fire between warring factions.

Abby greets Carter with hostility upon his return from the Congo; a British medical student causes a stir; Pratt tries to help an HIV-infected patient obtain insurance; a woman and her children are injured in a car crash.

Going into harm's way, Dr. Carter returns to the Congo to search for a colleague's corpse despite the chaos and danger of a civil war.

Abby receives a special "Dear John" letter from Dr. Carter while her fellow nurses threaten a walkout; Dr. Romano's mood worsens when he is fitted with a hook for his missing arm.

During the graveyard shift, Dr. Pratt treats a man who has lost the power of speech and a boy who has swallowed a quarter; a screaming man with a broken leg is kept waiting for several hours; Corday warms up to Dr. Dorset (Bruno Campos).

Failing eyesight makes an architect (Bob Newhart) despondent; doctors suspect a woman of abusing her child; Corday learns something shocking about the charismatic Dr. Dorset (Bruno Campos); the emergency room overwhelms a new medical student.

Dr. Kovac opposes Pratt's efforts to save the life of a premature baby; a pharmaceutical representative makes the rounds offering up samples; a psychiatrist prescribes drugs to an abused child; a man protests his exorbitant bill.

Dr. Lewis plans a home-cooked dinner for Hollander (Bob Newhart); Neela and Pratt treat a young man who was attacked in jail; Gallant gambles with the risky transfer of a patient; Sam brings her precocious son to the hospital for a day.

Teens meet with horrible ends after a classmate's (Devon Sawa) precognitive vision leads to their ejection from a doomed airliner.

Death returns to claim the lives of those who did not die in a horrible highway calamity as they were meant to do.

A high-school senior (Mary Elizabeth Winstead) and her friends must deal with repercussions of cheating death when they survive a terrible roller-coaster accident.

Racial tensions rise in New Orleans when a white officer shoots a black Navy officer he believed was armed in the middle of a busy street party.

When a Navy sailor is found dead, the team tracks the suspicious movements of people in his life prior to his death; Hannah comes to terms with her daughter's relationship with her ex's new girlfriend.

When Sebastian is injured while unsuccessfully trying to prevent a kidnapping, NCIS races to find the missing woman and her abductors; the team gets a peek into Agent Carter's personal life.

The team investigates the death of a Naval microbiologist whose hobby as a "myth buster" resulted in his death at the hands of a legendary bayou creature; Agent Khoury conducts an investigation into previous actions of Deputy Director Van Cleef.

As New Orleans grapples with the effects of COVID-19, Pride sends Tammy and Carter to investigate a suspicious death aboard an offshore humanitarian ship; Wade is overwhelmed by the high volume in the morgue due to COVID-19.

Tammy and Carter continue to investigate a suspicious death aboard a COVID-infected humanitarian ship; Pride and the team discover what may be the key to finding the killer; Wade helps a grieving woman.

Pride and the team take on a group of dirty cops when they discover that a murder victim was also a key witness in multiple excessive force cases; Tammy faces the reality of being in a new relationship.

The team continue to investigate the murder of an officer who was about to blow the whistle on police misconduct; Pride must get creative in order to finally get rid of the dirty cops; the mayor asks Pride to join her new task force.

When a woman from Cabe's past asks for help apprehending a war criminal, the members of Team Scorpion travel to Cuba.

Sylvester goes under cover in a federal prison in hope of saving three judges' lives; the team must orchestrate a prison break when Sylvester's life is threatened.

An explosion sends a top-secret submarine to the bottom of the ocean with limited oxygen, a self-destruct function that's about to activate, and Walter, Cabe and Happy on board.

The members of the team go under cover on a movie set in Kazakhstan in hopes of disabling a Soviet-era nuclear missile being sold by terrorists.

A nefarious virus is uploaded to Walter's computer, turning the team's new "smart" building project into a death trap with people locked inside.

A nefarious virus is uploaded to Walter's computer, turning the team's new "smart" building project into a death trap with people locked inside.

The team must intervene when Paige and Ralph are on a sabotaged, runaway subway train; Toby tries to impress Happy during his first boxing match.

The members of Team Scorpion take a lucrative job locating a top-secret aircraft in Area 51 for the CIA.

Team Scorpion is blackmailed into breaking into the United Nations to help with the assassination of an arms dealer; Sylvester tries to protect Megan's wishes.

When the team and Walter's parents visit Megan in the hospital, a deadly fungus outbreak occurs, forcing everyone into quarantine.

The members of the team go under cover at a university in order to track a hacker who is putting the world economy at risk.

Team Scorpion must stop a catastrophe on Christmas Eve when heavy rain creates a large crack in a dam, putting an entire town in danger.

Soon after the BAU steps in to help local law enforcement isolate a suspect for a murder, a second person who is related to the first victim is killed under similar circumstances; Prentiss is concerned about Garcia's behavior.

The BAU investigates a spooky local ghost story of the "Tall Man" and the clues it provides when two people go missing in the woods; a third person mysteriously surfaces the following day with limited details as to what happened to her friends.

The BAU investigates four murders along the eastern seaboard; the crimes become personal for Alvez when the team discovers there are ties to his time spent in pursuit of a notorious hit man; Alvez and his girlfriend decide to move in together.

The BAU races to capture the vigilantes behind a series of attacks taking place every 27 minutes in the nation's capital; Prentiss and Unit Chief Andrew Mendoza lead the effort to identify the vigilantes and what's motivating them.

The BAU investigates a double homicide and kidnapping in New Hampshire; Rossi's plans to elevate his relationship with Krystall don't go as planned.

A professor from Lewis' past tips off the BAU to an alarming number of overdose deaths of patients who just completed rehab.

Prentiss faces her past when the BAU is sent to investigate the murders of prominent businessmen, all of whom are missing their hearts; Prentiss plans a romantic first date with Mendoza, but the evening is cut short by an urgent call from Rossi.

The BAU team heads to Portland, Ore., to investigate a chilling abduction that may be linked to a local couple who were killed in their home a week earlier.

The team investigates a suspicious death and the missing key piece of evidence is a top secret, high-tech battery; Pride and the team realize there could be deadly consequences if it falls into the wrong hands.

When a torpedo hits a fishing trawler at sea, the entire Gulf Coast is in jeopardy as Pride and NCIS race to find the submarine before it can strike again.

A Navy therapist who is working to get justice for victims of sexual assault is murdered; Carter's mother confronts him when he refuses to talk to the FBI for a background check on her behalf.

As Pride and the team continue the investigation of an officer's assault and the murder of her therapist, NCIS zeroes in on a suspect who's been working the system for years; Carter and his mother talk about how they'll move forward after a mistake.

Pride and the team are on the hunt for a kidnapped 14-year-old and discover that her father, who will soon have custody of her, is a radical survivalist living off the grid.

When a petty officer is shot down by a sniper, Pride and NCIS hunt down the killer, only to find that he may not be acting alone; Rita tells Pride that she has been offered a compelling job.

Sebastian's life is in danger when a criminal he put behind bars escapes police custody; Carter is tasked with keeping Sebastian in protective custody; Carter and Hannah's flirtation is fun gossip fodder for Tammy and Sebastian.

An NYPD officer kills a troubled fellow officer who took hostages at gunpoint; detectives Lupo and Bernard find valuable stolen documents and a dead body at the man's apartment.

An unconscious war widow and her lifeless infant are found in the rubble of a bombed Army recruitment center; DA Jack McCoy must make one of the most-unpopular decisions of his career.

Mysterious e-mails from a religious Web site lead detectives to the dead body of one of the page's creators; Jack McCoy's political opponent uses the media to attack his reputation.

As detectives investigate the death of a bank executive's mistress, they uncover a kidnapping and extortion plot.

The search for a writer's killer leads detectives to a closed espionage case.

While investigating the murder of a TV reporter, detectives learn that she was involved in a love triangle.

Detective Bernard and Lupo's investigation into a series of hate crimes against Hispanic men leads to controversy.

Detectives Lupo and Bernard have trouble finding a motive when a firefighter and his wife are found tortured and murdered in their new home.

The double murder of two young scientists leads detectives to a jealous, mentally disturbed woman.

Detectives Lupo and Bernard investigate three murders that appear to be the work of a serial killer.

The murder of a well-known charity executive leads detectives down a path of political intrigue.

When a young war veteran is found dead, Detectives Lupo and Bernard connect the murder to an attorney who used to work for the Department of Justice.

Detectives find that DNA evidence seems to link the murder of a CSU investigator and an attack on a young journalist (Camille Chen).

Detectives Lupo and Bernard investigate when an aspiring musician is found dead; a bag of cash leads to multiple suspects.

A law clerk (Julia Roberts) researching a client's health case stumbles on a cover-up of a contaminated water supply in a desert town.

Based on the play about six Southern women who become close friends despite their eccentricities and complicated lives.

A law clerk (Julia Roberts) researching a client's health case stumbles on a cover-up of a contaminated water supply in a desert town.

A loving husband and father of two is kidnapped after accidentally getting involved in illegal dealings far beyond what he imagined; Jubal must make a difficult decision regarding his family and their future.

A rain of fire threatens the hospital staff on Thanksgiving Day; Abby treats an HIV-positive woman who might be pregnant; Dr. Romano plans to file a complaint against Pratt.

Cultures collide when Neela treats two Amish teenagers involved in a car accident; Sam clashes with Dr. Kovac when he pays too much attention to her trouble-prone teenage son.

Dr. Carter celebrates Christmas at a Congolese medical clinic, wrangling over meager supplies and confronting anti-Americanism, but he falls for an AIDS worker named Makemba (Thandie Newton).

Dr. Carter returns from Africa accompanied by a new love, Makemba (Thandie Newton); Drs. Pratt and Gallant argue over a personal matter.

Abby and Neela are assigned to a monthlong rotation in the neonatal intensive-care unit, and they experience emotional highs and lows while caring for the struggling infants.

Dr. Carter's inquisitive girlfriend (Thandie Newton) makes an impact as she observes hospital operations; Gallant is almost shot during a domestic dispute; Weaver dedicates a center to the memory of Dr. Romano.

The BAU team flies to Iowa to investigate the disappearance of three 10-year-old children who appear to have been abducted from their homes, with surveillance video from a park as their only lead to finding the children's whereabouts.

Rossi questions his actions in the aftermath of a struggle with a serial killer who appears to have outsmarted the BAU.

The BAU investigates a string of murders taking place in supposedly haunted houses in Lewiston, Maine.

Rossi prepares to marry Krystall; the team investigates a series of fatal shootings following car accidents.

The BAU team investigates an unsub with striking similarities to Rossi's latest obsession, "The Chameleon.".

The team searches for Everett Lynch and his daughter; Spencer has a meaningful visit with his mother.

The BAU team investigates a series of seemingly random fatal explosions throughout Kentucky and Tennessee.

The members of the BAU enjoy a Saturday off in vastly different ways; Rossi and Prentiss help Simmons assemble a new crib; Garcia leads a hacking competition; Dr. Reid strikes up a conversation with a woman named Maxine.

After a Molotov cocktail is hurled into Pride's bar, evidence leads him to his old nemesis, Sasha Brousard; Tammy uses her profiling skills on Hannah and Carter with shocking accuracy.

The team investigates the deadly bar bombing and impending criminal turf war involving Sasha Broussard; Pride must come to terms with having Connor in his life; Carter and Hannah work to define their new relationship.

Pride directs the team to link Sasha to the recent attacks in New Orleans; Carter and Tammy search for a stolen highly trained military dog; Pride and Rita make an important decision about their wedding.

Jordan Klepper has traveled all over America, covering more Trump rallies than anyone else. In this special, he invites curious experts and celebrities to join him at Trump events in three swing states for a wild ride towards Election Day.

After a Wall Street investor is murdered, the team is led to an insider-trading ring that uses unconventional methods to gain information; OA struggles to maintain confidence in his budding relationship with Mona.

When a board member of a soon-to-be-public medical tech company is murdered, the team tries to find out who had the most to gain from his death; OA is conflicted when pressure to help a family member is at odds with his commitment to tell the truth.

A car crash results in the death of a photographer; Maggie sympathizes with his widow when she notices similarities with her own husband's death.

After an altercation with a student, teacher Patrick Miller goes missing, leading the team to investigate everyone who might have had a grudge against him; a key witness in the case steps up to help.

A former kidnapping victim is linked to a series of murders that includes the daughter of an NYPD detective; Kristen begins to doubt her ability as an agent after a training exercise leaves her shaken.

After a businessman with a history of harassment claims against him is killed, the team suspects the killer may be one of his many accusers.

Sam treats an abused, pregnant teenager; Carter shows Makemba (Thandie Newton) the wonders of wintertime; emergency-room mayhem shocks a risk-assessment expert (Richard Kline); Dr. Pratt and Abby restrain a man who has tuberculosis.

Claustrophobic Neela accompanies a poisoned newborn into a hyperbaric chamber; Lewis and Abby treat a man covered in blood; a boy tests positive for leukemia; Chen returns from China with her sick father in tow.

A psychotic patient threatens the hospital with a stolen Army tank; Dr. Kovac's French friend visits; an E.R. staffer has a heart attack; 13-year-olds have chlamydia.

Dr. Carter's protege takes his advice too far and treats a brain-injury patient; Dr. Gallant falsifies a medical report; Chuck defends Dr. Lewis from a pervert; Dr. Chen searches for a caretaker for her combative father.

Dr. Weaver tries to save Sandy after she is severely injured fighting a fire; Dr. Lewis is confined to bed rest; tensions between Dr. Gallant and Neela mount; Dr. Corday gets a pleasant surprise.

A woman accuses Dr. Pratt of sexual harassment; Neela studies strokes in a laboratory with brainy but bizarre graduate students; Sam tries to resist the appeal of her son's father (Cole Hauser); Weaver vows to fight for her baby boy.

Following a series of fatal shootings, the BAU team travels to Illinois to investigate what appears to be a copycat serial killer.

After a father and daughter get kidnapped, a former foe of the BAU returns with very specific demands for Dr. Reid.

When the BAU team travels to Denver to investigate several murders, Prentiss is forced to evaluate her relationship with Special Agent Andrew Mendoza.

Prentiss and J.J. are faced with important decisions to make about their futures as the BAU travels to Texas to investigate a series of murdered businessmen.

Rossi develops some new theories about Everett Lynch, aka The Chameleon; the team sets out on an epic hunt to capture Lynch.

While hallucinating after he gets a brain injury, Dr. Reid is visited by ghosts from his past; the BAU makes a shocking discovery about Lynch that affects Rossi personally; the team comes together to celebrate Rossi's retirement.

The BAU interviews candidates to take the opening left by Kate's departure; the team tracks a serial killer who leaves behind evidence that indicates a person intent on revenge.

The team must find the person responsible for a sarin gas attack on a Los Angeles bus before a larger incident occurs.

On the eve of his wedding to Rita -- and Connor leaving for the Witness Protection Program -- Pride must track down who attacked Jimmy and Connor, while he navigates Sasha's ulterior motives regarding her son.

The team investigates the death of a petty officer whom Pride had mentored; Brody searches for a place to call home.

When a Navy lieutenant on liberty dies of bubonic plague, NCIS Special Agent Tony DiNozzo helps the New Orleans team as they try to control a potential outbreak and find the source of the infectious disease.

An armored transport bus crashes, resulting in the escape of four prisoners -- including a black market broker topping the list of national security threats; Pride needs Gibbs' help with a case file full of redactions.

A bank holdup leads the team to a safe deposit box, the contents of which have the potential to destroy national security; Kristen is eager to get back into field work while other team members still have their concerns.

The son of a retired FBI agent is kidnapped, and the team must investigate if it's an act of revenge; Isobel must make a hard call when information from the past comes to light.

When an attorney is found dead near the body of a private escort, the team must piece together what connected the two seemingly random victims; Jubal's connection with one of the victims makes finding the killer much more personal.

After a truck filled with armor-piercing rifles is hijacked, the team works to discover who stole it, and what they have planned for the stolen weapons; a friend from OA's past returns to help with the case, but OA isn't sure he can trust him.

After the police ignore a desperate father's plea for help, he abducts a billionaire's daughter and holds her hostage in a safe room until his own missing child is returned to him; Jubal puts his hostage negotiation skills to the test.

When the team is called to the scene of a murder, it quickly suspects political motivation; Maggie contemplates a decision that could affect her entire career.

Jess LaCroix and his team come to help OA find a fugitive LaCroix arrested years ago after a bus with 26 students goes missing and he's the main suspect.

A panicked Dr. Weaver is ordered to give up her son to the Lopez family; Dr. Carter greets Kem (Thandie Newton) upon her return to the hospital.

Dr. Carter suspects trouble and rushes his pregnant girlfriend to the E.R.; Dr. Greene's daughter seeks a haven and morning after pills.

Dr. Kovac stops to help a stranded motorist and her son, but when a car hits them, he must use all his skills to keep them alive until specialists arrive.

Pratt, facing gunfire, loses control of his vehicle, trapping himself and his passengers under water; Dr. Weaver stops a police officer from performing a body search on a young woman; Dr. Carter and Kem deal with their child's remains.

Dr. Carter, struggling with unfulfilled dreams and the loss of his girlfriend, slips into a dangerous depression.

The girlfriend of a brain-dead biker with HIV wants to donate his organs to a friend, who is also infected with HIV; Abby orders a drug test on Ray's patient; Corday confronts Weaver over her choice of a surgeon.

The team suspects a jilted unknown subject is responsible when brides are murdered on the eve of their nuptials.

When a robbery-homicide leaves three restaurant employees dead, a cold case that occurred in the same town six years earlier could yield a lead.

A notorious street artist becomes a suspect when corpses are used in macabre graffiti art in Detroit; Dr. Lewis tries to balance work and her relationship with her fiance.

A murder in a Florida community of sex offenders results in a large number of possible suspects; a career opportunity could take Lewis away from the BAU.

Rossi's daughter, a journalist, investigates the disappearance of a college student; JJ comes back from maternity leave.

An unknown subject in Phoenix abducts people and deprives them of sleep; Garcia and Hotch deal with a threat from hit men.

The BAU works with the NSA when two undercover DEA agents are murdered and another goes missing; Hotch hopes the team's work with the NSA will bring them closer to finding a ring of hit men.

The members of the BAU team track an unknown subject who appears to be fascinated with medical experimentation.

When a Navy SEAL is found dead in a sorority house, the team must determine if his death was related to collegiate foul play or a classified mission; Pride's daughter visits the office.

The investigation into a chief warrant officer's death reveals that his wife has been abducted -- leaving the team with a 22-hour deadline; senior FBI agent Fornell assists with the case.

Amidst Halloween festivities in New Orleans, a Naval Staff Judge Advocate dressed in a costume is found dead in a cemetery; the team debates Halloween costumes and activities.

The team investigate the murder of a Navy Officer assigned as a tech liaison with a private developer; Pride turns the carport into an auto shop.

The team investigates a drug deal gone bad after the body of a college student is found; Detective Hailey Upton temporarily joins the team and finds her investigative methods clash with the Bureau's more buttoned-up environment.

The team welcomes a new member, Special Agent Tiffany Wallace, as they search for killers who orchestrated a mass shooting at a media company; OA's personal connection with the case threatens to cloud his judgement.

The team races to stop an active serial killer after three women are found weighted down at the bottom of a lake; Jubal looks into an old closed case after there are multiple similarities to the recent victims.

When the leader of a drug cartel and one of the world's most wanted men is apprehended by the team, the entire FBI headquarters is put at risk when his henchmen unveil a plot to free him; Isobel must make a difficult decision.

A shooting at a quinceañera leaves two dead, but the team believes they may not have been the intended targets; Maggie is conflicted as the team decides the best plan of action for using a witness to take down their suspect.

The team searches for a young girl who was kidnapped from a cabin during a family vacation; Maggie questions her relationship with Nestor when she learns he hasn't been completely honest with her.

The team must infiltrate a drug trafficking gang after the robbery of a chemical plant leaves two customs agents dead; Nestor offers his help on the case, giving Maggie new insight into his character.

While searching for the murderer of the adoptive mother of 10 disabled children, detectives uncover a reality-show offer and an affair.

When a doctor is murdered, the detectives investigate an abortion protester; Van Buren receives more bad news; Connie faces a moral dilemma.

The revelation of a murder victim's true identity leads detectives to a suspicious web site with threatening posts.

When a wealthy young woman is found dead in her apartment, a few signs lead detectives to believe the killer was not after her wealth; a security video exposes two potential suspects, leading the detectives to a drug cartel.

A suspicious nasal spray is found at the site of a deadly car crash; after the medical examiner realizes the spray could easily disorient its user, the detectives become suspicious of the victim's boss.

When a key witness in a murder trial is found dead in her hotel, detectives get involved in a spiraling case that unravels into an intricate conspiracy.

Detectives Lupo and Bernard think a violent armed robbery might be a scare tactic for a shakedown.

When a campaign volunteer is murdered, Detectives Lupo and Bernard end up dealing with more than just dirty politics.

When a journalist is found dead in an abandoned apartment, the investigation uncovers a relationship between the victim and a daytime talk-show host, who admits to a series of workplace affairs and a blackmail threat.

When a family is found murdered at home, a runaway teenager becomes a suspect.

The investigation of a 16-year-old student whose body was burned causes Lupo and Bernard to question the young person he mentored, the last person to see him alive; the investigation draws attention to a vicious high-school rivalry.

A woman's body is found stashed on a food service cart in a hotel; Detectives Bernard and Lupo discover evidence that leads them to a medical school research project.

After a man is found guilty of a hate crime, Emily Ryan (Amy Madigan) and The Innocence Collective try to prove his innocence.