As the team works to rescue a 5-year-old kidnapping victim, Scola suspects the boy's mother isn't being forthcoming about why her son was targeted; Nina struggles to open up to Scola about matters in their relationship.

Maggie returns from medical leave and helps the team investigate two homicides: a law student and a young man with possible gang ties; an inadvertent revelation from Maggie causes OA to worry that she is rushing back into the job too quickly.

When a deadly truck heist arms the killers with enough ammonium nitrate to construct a massive bomb, the team discovers a link to a terrorist group Maggie is working to infiltrate.

A teen shows up at FBI headquarters with a large bag of fentanyl, seeking the team's protection from the men who shot his father; Nina goes to Scola with a proposal he is hesitant to accept.

The team jumps into action when analyst Kelly Moran is taken hostage.

The abduction of a young woman leads the team back to a cold case from 18 years ago, which pushes Isobel to reconnect with her old partner Jake and take another shot at solving one of her first cases at the bureau.

Happy, Sylvester and Cabe suffer from life-threatening, fear-based hallucinations after a simple mission to protect a vital seed bank goes awry.

Team Scorpion must move Happy's friend Ada, and the sterile bubble Ada lives in that protects her compromised immune system, to a secure location after a severe storm leaves the structure surrounded by dangerous debris.

To stop a dangerous virus from spreading, Team Scorpion must locate an endangered monkey in the Amazon that has the antibody for the cure; Toby and Happy see a counselor to prepare for matrimony.

The team races to save Paige and Happy when a wire supporting the gondola they are in during a mission to repair a turbine at a wind farm snaps.

The team defies the orders of a foreign government when it retrieves an asteroid containing DNA strands that could have deadly consequences if they are exposed.

The team attempts to extract a pair of scientists trapped inside a failing and dangerous bio-dome designed for Mars.

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 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.

After thousands of classified government files are stolen, the NCIS team searches for an underground group of hackers who were co-founded by Elvis Bertrand, Pride's old contact.

NCIS agents McGee and Torres head to New Orleans to partner with Pride and his team in the search for the missing homeland security theoretical terror playbook.

Painful memories come flooding back when a gruesome copycat murder leads to the reopening of a case for Wade.

Pride's longtime friend, state and military attorney Rita Devereaux, asks NCIS to investigate the disappearance of a JAG lawyer who specializes in classified cases and volunteers at a private military academy.

After a mysterious bioweapon leaves two MTA workers dead and one injured, the team rushes to determine who is behind the attack and the location of their next target; Jubal's past demons begin to surface.

The shooting of a federal corrections officer leads the team to an ex-Marine who has gone rogue ever since he returned from Afghanistan; Tiffany's sister looks to her for guidance when their younger brother begins to lash out.

The team investigates the murder of a professional informant after he's found dead outside an abandoned factory; Maggie reconnects with an old colleague and mentor.

After a string of armed robberies targets various businesses, the team investigates a suspect who leads them to something much bigger; OA worries about his future when his investments begin to go south.

When an off-duty diplomatic security agent is fatally shot in New York City trying to apprehend someone, the team investigates if there's a connection to his time working in Croatia.

Maggie calls in Remy to aid Scola in his undercover mission to find the terrorists believed to be responsible for the imminent attack in New York.

After extinguishing a catastrophic tunnel fire, Team Scorpion helps Toby and Happy get to their wedding ceremony.

Team Scorpion has little hope for rescue after their plane crash-lands on a remote, deserted island while en route to Toby and Happy's honeymoon.

Tensions run high for members of Team Scorpion when they must overcome personal conflicts to be rescued from the desert island they crashlanded on three weeks earlier.

Team Scorpion must work with their old nemesis Mark Collins to prevent the extinction of mankind; Walter and Paige awkwardly navigate their new relationship.

Team Scorpion continues work with their nemesis to prevent humanity's extinction; Cabe's last-minute decision while on the case endangers his career.

When poachers almost kill a pregnant deer, the team tries to save the deer and the fawn; Happy and Toby discuss the future of their family.

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.

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.

A highly skilled special operations Marine assaults six men in a bar, sending the NCIS team on a city-wide manhunt.

Tammy is reunited with her ex-husband, Ethan McKinley - who embezzled millions in Katrina relief funds - after he's tied to the murder of a crime boss' son.

A deadly accident at a naval base exposes a unit of Seabees to a super virus and leaves the rest of the base and the city of New Orleans at risk for an outbreak; Wade is infected with the virus and given hours to live.

Lasalle must investigate his former partner in the Vice unit after the NCIS team finds a link between an international drug ring and the New Orleans Police Department; Rita looks into a connection between the mayor and illegal activity in Clearwater.

When the deputy commander of an Air National Guard Base is kidnapped, the team must work quickly to find the suspect along with stolen ammunition; Scola questions his own safety in the aftermath of a recent traumatic experience.

When a trucker is gunned down after a routine trip from Canada, all signs point the team to a noted criminal on the FBI's Most Wanted Terrorists list; Jubal gets to work with an old friend and colleague, Detective Jack Lombardo.

A drug dealer is shot in a federal park and the team sets out to look for his killer; Maggie's sister returns to New York and complicates the case.

All eyes are on the team when it tries to find out who kidnapped the only child of a prominent U.S. senator; the abduction also uncovers a potential link to a similar case that was pushed to the side by local authorities.

After finding a group of teens dead from a drug overdose, the team races to find the dangerous dealer and his supplier; OA questions where he stands in his faith.

When a prominent doctor is found dead in a ritualistic slaying, the team must race against time to hunt down a religiously motivated serial killer; Scola faces a life-or-death decision.

Fontana and Falco make an arrest after a blaze kills a firefighter; the discovery of a charred pistol leads them to reopen the investigation into an old murder.

A commuter train strikes an SUV parked on the tracks, leaving 11 dead; Fontana and Falco sift through the wreckage in search of clues until they find a depressed construction worker who claims he meant to commit suicide, not homicide.

McCoy and Borgia consider making a deal with an ex-convict in order to save an abducted five-year-old girl.

Fontana and Green seek the aid of Detective Olivia Benson; they discover a money-laundering scheme involving a mother-daughter team Benson had dealt with in a past case.

A criminal makes a startling deathbed confession; Detective Fontana reopens a 10-year-old case file concerning the murder of a 12-year-old girl.

Detectives investigate when a man is killed by a car bomb before he can disconnect his incapacitated wife's feeding tube.

Detectives learn that a murdered prostitute was actually an undercover reporter trying to expose a brutal gang.

A nurse practitioner with a social agenda faces charges when an abusive young mother accused of murder suddenly dies in her jail cell; detectives learn she may have been sterilized, without knowing it.

A single mother is killed, and her baby is stolen; police locate the child with a woman who took the infant while pretending to be pregnant.

Detectives link the owner of a trucking company to the smuggling of illegal aliens and suspect a citizen border-patrol member of his killing.

When detectives investigate a series of seemingly random murders, they find a hit list that includes Jack McCoy; he realizes the people on the list are jurors from trial of a multiple murderer he prosecuted years ago.

When Lt. Van Buren's college friend's daughter is found dead, she leads a no-holds-barred mission to catch the serial assailant who attacked her in the past.

Religious tempers flare when a man is killed after desecrating a treasured edition of the Hebrew Torah.

An officer exacts revenge upon his friend's alleged killer and tries to avoid prosecution by threatening to expose tainted evidence from previous cases.

Pride listens in on a wiretap of Mayor Hamilton; the NCIS team investigates when Navy weapons get stolen in a train heist; featuring musical performances by Sheryl Crow.

The murder of a Navy chaplain leads Pride to uncover a possible connection between Mayor Hamilton and illegal activity taking place in the city of Clearwater; Percy continues to face repercussions of her choices on a previous case.

When Pride is spotted tracking one of Mayor Hamilton's accomplices on a crowded street, the suspect opens fire, putting innocent lives at risk before disappearing.

Unable to trust anyone in New Orleans, the NCIS team calls in FBI Assistant Director Isler to help expose and stop Mayor Hamilton's sinister scheme.

After an unknown shooter causes chaos at an annual Thanksgiving 5K, time is of the essence for the NCIS team to find the culprit; Kasie joins Knight for Thanksgiving lunch at Knight's sister's house.

NCIS investigates the death of a college student who was killed while running across the street and had connections to McGee's wife.

NCIS agents from Washington, D.C., Los Angeles and Hawaii, in D.C. to attend the retirement party of a beloved Federal Law Enforcement Training Center professor, find themselves investigating his shocking suicide.

Parker discovers he's a victim of identity theft while investigating the unusual murder of a Navy ensign; Knight and Jimmy face hurdles in their relationship as their connection heightens.

When an old pal of Torres' comes to him -- disheveled and bloodied -- for guidance amidst an undercover FBI operation and then disappears, NCIS helps track him down; McGee prepares to be a contestant on a popular game show.

In preparation for a role, a world-renowned actress shadows the NCIS team as they investigate a decapitation case.

Parker grapples with his emotions when a con man from his past turns up as a prime suspect in the murder of a navy officer.

NCIS investigates the death of a ride-share driver who was found after a car accident; Parker's dad, who is temporarily living with him, assists the team in their investigation.

When a bus explosion kills several innocent people, the team jumps into action to take down the responsible terrorist organization; Scola tries to balance fatherhood with the job.

After the president of the NY Fed is gunned down trying to help a young woman in peril, the team races to find the killer and the missing woman.

When a local club owner is found dead, the team works quickly to find the motive behind the murder of a seemingly innocent man; OA is smitten with a new love interest but is concerned that she's mixed up with the wrong crowd.

Alex Browning is embarking on a trip to Paris. He experiences a premonition -- he sees the plane explode moments after leaving the ground. Insisting that everyone get off the plane, Alex and seven other people are forced to disembark. All watch as the plane actually explodes in a fireball. He and the other survivors have briefly cheated death, but will not be able to evade their fate for very long. One by one, these fugitives from fate fall victim to the grim reaper.

Kimberly (A.J. Cook) has a premonition of a horrible highway accident killing multiple people -- including her and her friends. She blocks the cars behind her on the ramp from joining traffic -- and as a police trooper (Michael Landes) arrives, the accident actually happens. Now, Death is stalking this group of mistaken survivors -- and one by one they are dying as they were supposed to on the highway.

Six years after a group of high-school students first cheated death, another teen (Mary Elizabeth Winstead) has a premonition that she and her friends will be involved in a horrifying roller-coaster accident. When the vision proves true, the student and her fellow survivors must deal with the repercussions of cheating the Grim Reaper.

Alex Browning is embarking on a trip to Paris. He experiences a premonition -- he sees the plane explode moments after leaving the ground. Insisting that everyone get off the plane, Alex and seven other people are forced to disembark. All watch as the plane actually explodes in a fireball. He and the other survivors have briefly cheated death, but will not be able to evade their fate for very long. One by one, these fugitives from fate fall victim to the grim reaper.

While Pride remains on probation after his rogue takedown of the corrupt Mayor Hamilton, his team is closely monitored by a strict supervisor; the team must secretly investigate after the FBI takes the lead on a case involving stolen nuclear waste.

An erratic whistleblower who calls Pride her mentor kidnaps him to help her locate a serial killer targeting young women in the Gulf of Mexico.

The team joins forces with FBI Director Isler after a Russian operative with intelligence on sleeper agents disappears; Tammy partners with former sleeper agent Eva Azarova to assist in the disappearance.

The team investigates the copycat murder of an unsolved case from 150 years ago that spawned a legendary ghost story; Gregorio is spooked when the case is connected to a recent séance and a local medium.

Sebastian is placed on administrative leave after being questioned by the FBI about a foot chase; Pride and the team attempt to clear Sebastian's name.

The murder of a petty officer leads the team to a woman who is targeting men with high security clearance; Lasalle's father arrives to discuss the family business.

The team investigates after a clinical trial in which brain implants are put into veterans is hacked; Patton must work alongside his ex-wife, who spearheads the project.

The NCIS team jumps into motion to investigate who is responsible for a potential bioterror attack at a strip mall parking garage; Knight's father deals with a health scare while in Japan.

NCIS works to solve the murder of a Marine private who appears to have been killed for helping an Afghan refugee; Jimmy navigates the pressure of parenting his teenage daughter, who is eager to go out on an unchaperoned group date.

The NCIS team digs deep to investigate a Navy lieutenant who's accused of trying to murder her husband but has no memory of the attack; Kasie navigates a potential medical scare.

Agent Knight goes viral for saving a mother and child from a potentially fatal car accident.

NCIS works to solve the murder of a senator's daughter who has a rebellious reputation and large online following; Jimmy gets competitive with an old college rival.

NCIS must investigate a string of Russian spy encounters that may be linked to a suspicious murder; Jimmy accidentally makes a confession that could change the course of his relationship with Knight.

Agent Torres finds himself in prison as the team tries to stop an impending terror attack on U.S. soil.

Ziva surprises Gibbs with a cryptic warning, prompting him to question why she remained underground for years while being presumed dead by family and friends.

With their lives in danger, Gibbs and Ziva's rogue investigation takes an unexpected turn when a possible terrorist plot is revealed.

After the body of a Marine lieutenant is found hidden under an 18-wheeler, the team tracks the vehicle's previous locations to pinpoint the crime scene and suspect; Sloane encourages the team to sit down and talk about Ziva's recent reappearance.

The team links a bizarre crime scene at Arlington National Cemetery to a string of attacks on homeless veterans; Vance orders McGee, Bishop and Torres to complete hours of evidence garage cleanup for withholding information.

NCIS investigates Marine Cpl. Laney Alimonte after evidence suggests she murdered her neighbor while being treated for insomnia by a hypnotherapist; Gibbs befriends his new neighbors after the 9-year-old's baseball crashes through his window.

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.

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.

Wade's son asks Pride for help after being attacked and discovering his girlfriend is missing; Pride must meet with a therapist to discuss his process for solving cases.

Pride starts to doubt evidence suggesting homeless kids murdered a petty officer.

Rita Devereaux tells Pride that Douglas Hamilton is about to make a deal to get out of prison; Pride and the team re-investigate the Clearwater case in hopes of spoiling his plans.

After a deadly armed robbery and high-speed chase is linked to an undercover ATF operation, Percy reconnects with her former ATF partner.

Sebastian's high school friend asks for help when her business partner is killed at a gaming convention; FBI Special Agent Raymond Isler believes Adrian is the hacker that the Cyber Crimes division has been tracking for years.

A petty officer's murder leads the team to a nightclub where Pride's mother used to perform; LaSalle must return home to Alabama after receiving an unexpected call from his family.

Though a journalist's death in a bathtub looks like suicide, hand marks on his shoulders and pills from an ex's prescription suggest foul play.

A promising Hispanic student at a specialist school is strangled; Fontana and Green soon learn the victim was selling test answers and writing papers for more privileged students.

A woman says she killed her teenage son out of fear that he would follow in his criminal father's footsteps.

A murder victim, a young banking associate, has hundreds of thousands of dollars in a checking account, which may be a clue to the case.

Detectives believe vengeance is the motive for the shooting of a private military contractor, found dead in his hotel room.

A bank executive must assist in a robbery in order to save his kidnapped daughter.

A diner shooting leads detectives Fontana and Green to a desperate gunman seeking revenge for the death of his baby sister of AIDS at a children's hospital.

A newspaper reveals the identity of an undercover police officer, resulting in her murder, so Detectives Green and Fontana search for the source of the leak.

Detective Falco finds slashed to death in his bathroom the young woman he took home the night before.

McCoy risks his career when he uses a corrupt DEA agent (Ritchie Coster) to lure psychopathic killers out of hiding.

Tabloid photography may have played a role in a fatal burglary attempt; ADAs Jack McCoy and Consuela Rubirosa argue the use of shield laws to protect celebrity journalism.

An Internet photo of a murdered woman provokes a slew of 911 calls.

An 8-year-old girl dies in the explosion of an Upper East Side brownstone; detectives determine faulty wiring is to blame, but with little evidence it is difficult to prove the case.

A young Middle Eastern man dies in an apparent hate-crime, but the suspect hires a high-powered lawyer who tries to have the case thrown out.

A man (A.J. Handegard) dies after being identified on a newsmagazine program that had been luring suspected pedophiles by having staff members pose as young girls.

An executive of a body armor company is gunned down while arriving at his daughter's $2 million sweet-16 party; detectives tie the incident to a U.S. soldier killed in Iraq when his vest failed.

Traffic police pull over a drunken, bloodstained celebrity (Chevy Chase), whose racism becomes apparent after his arrest.

When a federal judge is gunned down in broad daylight, the team is sent looking for a suspect with ties to a local Islamic center; Maggie reunites with a former colleague.

When the director of a Brooklyn migrant center is abducted and held hostage along with his wife, the team must work quickly to meet the demands of their kidnapper; Maggie picks Jessica's brain about motherhood.

After multiple people are targeted and killed with a poisonous gas in broad daylight, the team races to find the killer; Maggie continues to explore motherhood.

When a bombing at a local restaurant leaves several injured or dead, including a congresswoman and someone close to Isobel, the team races to apprehend the suspect before another explosive goes off.

After an employee of the U.S. Army is shot in an industrial park, the team works to track down the killer who reveals a larger plot at play; Tiffany continues to struggle with the guilt surrounding Hobbs' death.

When a retired FBI agent is tortured and killed while working a security job, Scola and Nina go undercover as a married couple deep in the diamond game as the team tries to find out who is responsible.

After an FDIC security guard is killed while tending to a pregnant woman in distress, the team works to locate the woman and the killer who took her hostage; OA and Isobel worry about Maggie as she navigates taking care of Ella.

While decommissioning an old nuclear missile, an accident causes the team to endure exposure to toxic vapor while trying to prevent the nuke from detonating; Paige confronts Happy about constantly tagging along with her and Walter.

While attending a tech convention, Team Scorpion is taken hostage by a group attempting a virtual heist.

At Halloween, the team takes on a case to prove the existence of ghosts on the Queen Mary but find a ship on a deadly collision course; Walter considers taking note of Paige's interests to benefit their relationship.

A device that can prevent a nuclear meltdown is tracked through the Los Angeles sewers; Walter learns to listen and not offer advice to Paige; the team meets their new neighbor.

Team Scorpion visits a renaissance festival, but the revelry is cut short when a group tries to rob a nearby police evidence locker; Paige grows weary of Walter pointing out the historical inaccuracies at the festival.

Team Scorpion becomes stranded on a floating island of trash they were trying to destroy; Toby works with Cabe to uncover the details of his father's death.

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.

Reid plays a central role in the BAU's elaborate plan to take down a ring of hit men known as the Dirty Dozen.

When corpses are discovered in public places in Boston, a ride-sharing service may lead the team to the killer.

The BAU looks for a suspect and a motive when victims are found in truck stop restrooms in the South.

An 18-year-old woman escapes from the home where she and two other women were held captive for years.

FBI Special Agent Raymond Isler asks Pride for help with an off-the-books opioids theft investigation he is personally invested in; Percy works undercover as a getaway driver, with Isler as the muscle for a job tied to the case.

A congressional aide disappears after a hit man saves her from two men posing as NCIS agents; LaSalle struggles with life-altering decisions regarding his brother's future.

The team investigates the murder of a Navy captain who was searching for a priceless 200-year-old fleur-de-lis during the annual Louisiana Pirate Festival.

Pride, Sebastian and Tammy travel to South America after Pride is personally requested by a former colleague to assist with a classified operation that has been compromised.

The team is thrown into a highly political case after four members of the Taliban are shot and one is kidnapped in New York with no record of their entrance into the country; OA struggles to open up to Gemma about his past in Afghanistan.

When a truck driver is murdered and the drug he was transporting goes missing, the team hunts for those behind the remaining batch that is already wreaking havoc on the streets of New York.

The Somalian terrorist group behind the death of Agent Hobbs resurfaces, sending the team on a chase to take them down for good.

After a bomb explosion devastates a residential apartment building, special agents Maggie Bell and Omar Adom "OA" Zidan of the New York office of the FBI investigate a possible war between rival gangs.

After eight people are fatally poisoned at a deli in New York City, agents Maggie Bell and OA Zidan trace the crime to an unlikely culprit and conduct a sting operation to prevent further attacks.

Special agents Maggie Bell and OA Zidan join the team to investigate the murders of 18 young women, and they get help from a survivor associated with the deceased.

Team Scorpion tries to help a father and his daughter when their plane crashes nearby; Paige helps Walter navigate his feelings about Cabe's possible future in prison.

The team anxiously awaits the verdict of Cabe's trial which could send him to prison; they use their nervous energy to try saving a dog stuck in a cistern.

On Christmas Eve, Walter becomes unconscious after falling down the stairs and enters a dream world where Team Scorpion never existed.

The team must work with Toby's nemesis and his wife -- Toby's ex-fiancée -- when they are locked inside an artificially intelligent doomsday bunker that aims to kill them; Walter is distracted by a dream in which he married Florence instead of Paige.

Power is knocked out in Los Angeles, and the team must help a teen pilot and his girlfriend who are lost over the Pacific without any radio contact; Walter must look after a group of Ralph's classmates; Cabe tries to tell Allie that he loves her.

Team Scorpion must prevent an incoming tsunami from hitting a vulnerable nuclear power facility; Toby secretly helps his ex-fiancee retrieve her stolen identity.

The BAU team combs Los Angeles for a suspect after security footage is discovered, which shows an unknown subject being invited into victims' homes.

When Morgan is abducted, the members of the BAU team race against time to find him and save his life.

The team searches for an unknown subject who takes children while their parents are asleep; Morgan tries to find out who attacked him.

When an unsub targets the BAU, the team pursues the person who is responsible for the actions.

Emily looks to the BAU for help when tracking an international serial killer; the BAU deals with Morgan's departure.

The BAU hunts for an UnSUB who deliberately disfigures victims; Rossi and his ex-wife have an uncomfortable reunion.

The BAU plays a dangerous cat and mouse game with a convicted serial killer who may have information on the whereabouts of two kidnapped boys.

Hotch is arrested by a SWAT team and suspected of conspiracy; when the team members scramble to prove Hotch's innocence, they discover a larger plot may be on the horizon.

Percy and LaSalle go undercover at a high-stakes poker game after the organizer targets players with access to a naval research laboratory; Laurel Pride visits her dad during spring break to discuss options after her upcoming graduation.

Pride and his bar patrons are held hostage by a group of volatile thieves.

Gregorio calls on her former behavioral science professor when the team's latest case matches one she studied during FBI training.

A journalist posts a scathing article documenting Pride's "reckless use of justice"; the team is concerned about the fallout from the piece and the confidential information revealed; Rita Devereaux tells Pride it is a coordinated attack on him.

As the body count continues to rise, Maggie Bell and OA Zidan rush to track down an active sniper who has an elusive motive.

Maggie and OA investigate the death of a safety inspector and its possible connection to a leak at a nuclear power plant.

After a senator's daughter is kidnapped and held for ransom, the FBI must find the little girl before their time limit expires; they must dig into the senator's past for clues to who did this to his family.

Maggie and OA hunt down a ruthless group of robbers who are posing as police officers to target armored trucks.

Maggie and OA lead the search for an abducted former biological weapons chemist.

After a key witness and a U.S. marshal are ambushed and killed, Maggie and OA must find the man who leaked the information that led to their murders.

On Valentine's Day, Team Scorpion must help a doctor and pilot who are trapped inside a helicopter; Toby and Happy wait for news on their fertility results; Sylvester realizes that he may have feelings for Florence.

The mental faculties of the geniuses of Team Scorpion are impaired while trying to prevent the creation of a black hole; Paige must simplify the science for them; Florence and Sylvester grow closer when she helps him with a special project.

The team is taken hostage when it inadvertently crashes a bank robbery in progress; Sylvester's feelings for Florence grow.

Team Scorpion heads to the bayou to track down a cagey alligator to stop a deadly virus; Paige teaches Walter the concept of the "white lie"; Walter hits Cabe with a tranquilizer gun, and Toby must save his life.

Team Scorpion must use their high IQs to win a softball game; Walter's secret night out with Florence puts Toby and Happy on edge.

Paige's maternal side goes into high gear when an unconscious boy gets stuck in the wheel well of an airborne airplane; Walter's white lie to Paige starts to take a toll on him; Paige realizes something is amiss.

New recruit Luke Alvez helps the team capture a killer who escaped from prison with 12 other convicts.

J.J. is shaken after investigating the case of two abducted children, and tells her husband about the events.

As the BAU welcomes back Emily Prentiss, they're called upon to investigate the disappearance of three women.

The team searches for a serial killer along the Appalachian Trail in rural Virginia.

The BAU investigates the case of two murdered families, where two high school students are the sole survivors.

Three children vanish while riding their bikes on the same path where a similar unsolved disappearance took place 30 years earlier.

A man who believes himself to be the brother of Dr. Tara Lewis arrives in town, knowing everything about Tara's family; Tara is unable to make contact with her real brother.

The BAU team investigates when the remains of a dozen people are discovered along a creek bed in Yakima, Wash.

Pride assembles an off-the-books team to search for a loophole when he faces a grand jury indictment for abuse of power.

Pride's teams uncover a sinister plot during the New Orleans Tricentennial Fleet Week celebration.

While Pride fights for his life in the ICU, the team scours the city for the hit woman who attempted to assassinate him.

The team searches for a former Irish Republican Army bomb maker who was smuggled into the city; they are joined by agent Hannah Khoury, Pride's replacement during his medical leave; Pride considers a new position within the agency.

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

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.

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.

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.

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.

Chris Drake finds his friend dead on a party bus, making him an instant suspect; as investigators dig deeper into the case, more of the story comes to light, leading to an unlikely conviction.

When a convicted mass murderer escapes from prison, detectives rush to apprehend him, but not before he murders two more people.

An attorney involved in a high-profile wiretapping case is found dead.

The son of a model and tabloid queen (Mariel Hemingway) dies of a brain tumor caused by bone replacement in his legs.

The adopted infant of a soap opera star and a relative of the baby's biological father are central to a murder investigation.

Someone in a crowd fires a gun, killing a student, during a question-and-answer session of a controversial speaker (Charlotte Ross).

When a gay actor is found dead, evidence points to a popular pastor (Anson Mount) known for speaking out against homosexuality.

When an actress is found hanging in her office, detectives quickly discover that she suffered a blow to the head prior to the hanging.

A high-profile publisher is found dead after putting out a controversial book.

Green and Cassady suspect arson in a string of church fires, but the discovery of a body in the ruins shifts the focus of the investigation to homicide.

Detectives determine to find out whether a rapper's murder was a random act or connected to her work.

The death of a Russian émigré (Michael Aronov) seems to be an act of terrorism until the medical examiner finds traces of a specific drug in the victim's body.

Detectives suspect a former sexual predator of killing young boys.

Detectives investigate a possible connection between the deaths of two homeless men, who died within a day of each other.