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 an Australian Royal Navy Lieutenant is murdered in New Orleans, Special Agent Naomi Parsons (Kate Beahan) is sent to work with Special Agent Pride.

When a petty officer is found dead, the team's participation in the annual Red Dress Run comes to a halt.

An extremely intelligent Navy coder -- employed by Brody's mom (Annie Potts) -- is put in danger when the heart intended for him is stolen.

After traveling to Texas to escort a key witness to the trial of an infamous arms dealer, Sonja and Special Agent Pride are ambushed.

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.

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.

In Chernobyl, Sylvester and Paige become trapped inside a decaying nuclear reactor that the team is trying to repair before a tragic meltdown.

The team must outsmart mentally unstable ex-Scorpion member Mark Collins when he kidnaps Toby and threatens to kill him if his demands are not met.

The team members set aside their personal and romantic issues when hackers take over targeted U.S. military aircraft and war ships, pointing the weaponry at American cities.

The team members set aside their personal and romantic issues when hackers take over targeted U.S. military aircraft and war ships, pointing the weaponry at American cities.

When Walter is accidentally launched into space in a rocket, Team Scorpion must find a way to bring him home before his oxygen runs out.

A boy from Ralph's class goes missing after having a run-in with a deadly criminal; Toby comes closer to discovering the identity of Happy's husband.

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.

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.

During a blackout in New Orleans, Pride is determined to figure out who murdered a family friend's fiance.

A Marine's murder reveals new clues in the first case LaSalle and Pride worked together; a Thanksgiving celebration at Pride's bar.

Wade's adopted son becomes a suspect after a series of Christmas burglaries turn deadly; Brody and LaSalle tease Sonja about the team's holiday gift exchange.

Special Agent Pride and the team investigate a Russian sleeper agent involved with Abby's brother; Sebastian goes to Washington, D.C., to work with Abby; Bishop drives all night to deliver a package and help the New Orleans team.

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.

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.

The shooting of a Panamanian jockey sends Fontana and Falco into the colorful world of horse racing; they learn that the animal's owner used stolen funds for the purchase.

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 citizens 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.

The staged suicide of a petty officer turns out to be murder; the team secretly works on an online dating profile for Pride.

A Mardi Gras celebration at Pride's bar is cut short when he and Mayor Douglas Hamilton (Steven Weber) are abducted by unknown assailants.

Evidence suggests that the man responsible for saving a lieutenant's life is a soldier who was captured in Afghanistan.

Special Agent Pride and the team uncover a domestic drug ring -- led by Sonja's childhood friend, Marion Watkins (Samaire Armstrong), that is producing cocaine.

NCIS investigates the death of a beloved Navy commander who trained some of the top athletes in the country.

NCIS investigates the death of a man on a cruise ship whose body is discovered in the ship's sauna by McGee's mother-in-law.

A Navy reservist's body is found in a beat-up car at the end of a gun range; Kasie weighs the pros and cons of buying a gun.

When a hotshot financial adviser is found shot at a naval station, NCIS investigates the case by interviewing the victim's 3D hologram of herself, which she created before her death.

NCIS is called in when Navy Chief Warrant Officer Rafi Nazar is suspected of trying to sell stolen classified Navy software used to pilot combat drones.

After a civilian research vessel in the North Atlantic picks up a small boat of wounded Navy officers, NCIS arrives on the ship and is forced to hide after discovering terrorists are onboard.

When the body of a Navy lieutenant is discovered missing an eye, the NCIS investigation leads to the world of cage fighting.

While investigating the death of an intruder at Quantico, Jimmy and Kasie are exposed to a deadly biotoxin; the NCIS team calls on Dr. Carol Wilson for help as they race to find the antidote; Torres tries to distract Jimmy's daughter.

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.

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.

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

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

A Navy captain is murdered during an appearance on a local radio show; Pride's daughter comes home to talk about her plans for the future.

Agent Brody sees a connection between the case of a sailor struck by a party bus and the death of her sister; the team gets ready for the city's St. Patrick's Day celebrations.

After Pride's daughter is attacked on campus, the team finds a surveillance van loaded with pictures of the special agent's every move.

The team investigates when a Navy lieutenant is murdered during a traditional funeral procession in the French Quarter honoring the recently deceased.

When a Navy lieutenant dies during a secret visit to a general's hotel, agent Pride and the team are asked to break protocol for the investigation.

While visiting her family's restaurant in the French Quarter, a Navy culinary specialist is the target of an explosion; in D.C., Brody tracks a lead in the Gen. Leak case.

NCIS teams with Homeland Security when the murder of a Navy master diver is discovered to be linked to the chatter concerning a foreign attack on the city.

As NCIS investigates the cause of death of a reservist Navy SEAL surgeon, they're forced to bring Vance's daughter to help with a highly dangerous mission.

Parker's delinquent past resurfaces when NCIS is called to Philadelphia to investigate the death of a Navy petty officer.

A gruesome mishap at a Navy petty officer's gender reveal party leads NCIS to the case of a missing teacher who was popularized on a true crime podcast.

NCIS investigates the apparent suicide of a retired Navy officer who was in Palmer and Knight's grief group; Torres gets a call from NCIS Special Agent Jane Tennant to come to Hawaii.

When an infamous arms dealer is released from prison and bodies start piling up, Torres is forced to face the repercussions of his actions during an undercover operation he worked on years ago.

NCIS investigates a ring of clever teenage partygoers when a string of break-ins takes place at Marine Base Quantico; while working the case, agent McGee forms a bond with one of the teens.

NCIS investigates the unexpected death of a Navy reservist who was an investigative journalist; Knight and Jimmy's budding romance is put on hold when a vital organ transfer goes fatally wrong.

When Parker is framed for murder, the team members puts their jobs and lives on the line to buy time and uncover the truth.

With Special Agent Alden Parker still on the run with his ex-wife, the team investigates who from his past might have a personal vendetta against him in hopes of clearing Parker's name.

McGee's personal life and professional life intersect when a dad from his children's school is linked to a break-in at a government storage bunker.

When a dead body is found at an ancient burial site that is thought to be cursed, the team tries to determine the motive and the symbolism behind the crime; as Torres continues therapy with Dr. Grace, he discovers that their lives are in danger.

Agent Knight's past resurfaces when her ex-boyfriend, a National Parks Service agent, teams up with NCIS to investigate a campsite murder.

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.

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 NCIS team discovers a mole in the ranks while helping the Department of Homeland Security locate 900 pounds of missing explosives that are a threat to New Orleans.

The team joins forces with several federal agencies to stop a sniper who has been targeting crowded events in the city; FBI Special Agent Tammy Gregario begins investigating Pride's team.

Pride faces more repercussions from the FBI after he helps a former Navy Intelligence Analyst who is the primary suspect in a multiple homicide case.

After the discovery of a petty officer's body inside a sports arena, evidence leads Pride and the NCIS team to a kidnapping case of another petty officer, last seen in Mexico.

The NCIS must come to the rescue of one of its own when Sebastian is kidnapped while dining in a restaurant with his mother; Sebastian relies on his gaming skills in a prison break.

The NCIS and the FBI investigate a private plane crash in the bayou that killed three sailors; Sonja and Lasalle interview candidates for a job opening on the team.

A Navy SEAL candidate is murdered weeks before his graduation; Wade seeks Pride's help when her adopted son announces his plan to join the Navy.

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

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 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.

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.

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.

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.

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 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.

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.

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.

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.

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 under cover 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.

A simple job at the Los Angeles Natural History Museum turns deadly when thieves steal things from a rare gem exhibit to get the materials they need to make a nuclear bomb.Guests: Siobhan Fallon, Gonzalo Menendez, Víctor Manso, Ken Colquitt, Annie Little, Curtis Nelson II..

Team Scorpion explores a deep cave system in an effort to prevent a bat population from harming the North American ecosystem; the team dons Halloween costumes for Walter's impending immigration inspection.

On election day, someone tries to create turmoil in the U.S. presidential election, and Team Scorpion is called to investigate.

While in Ireland for Megan's one-year memorial, Walter discovers a natural disaster at a nearby lake has created a poisonous cloud that threatens an entire village; Cabe and Toby try to ease the tension between Tim and Walter.

When Paige's estranged mother stumbles upon a forgotten nuclear reactor precariously close to exploding, she calls on the team for help.

Walter takes a perilous swim to rescue a woman trapped in the La Brea tar pits; Paige's mother maximizes Ralph's troop cookie sales.

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

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.

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.

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

A sailor is murdered during a rowdy motorcycle rally in the city; Lasalle seeks personal advice from Gregorio.

After a member of the United States Navy Band is murdered in her home, Pride looks after the victim's nephew, who is the only witness to the crime.

The NCIS team investigates when a Marine corporal who is an amateur race car driver is in a fatal crash on the track.

Pride needs to protect a family friend engaged to the prime suspect in an ongoing NCIS and FBI cartel case.

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.

Programming to be announced.

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.

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.

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 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 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 encounters gunrunners while spending Christmas Eve at an electronics-free mountain getaway; Tim makes a decision about his place on the team.

Team Scorpion is forced to freeze Cabe's body after he's seriously wounded by exploding shrapnel while on a mission in the desert.

When Team Scorpion is tricked into producing counterfeit cash for a foreign entity that intends to ruin the U.S. economy, Paige relies on her mother's skills as a grifter to save them.

Team Scorpion attempts to save a man stuck on the edge of a massive sink hole that could permanently destroy the Los Angeles water supply.

Team Scorpion's job to find sunken treasure goes awry when Walter and Paige's boat explodes, leaving them lost in the middle of the Pacific Ocean surrounded by sharks.

Team Scorpion's job to find sunken treasure goes awry when Walter and Paige's boat explodes, leaving them lost in the middle of the Pacific Ocean surrounded by sharks.

Walter and Sylvester enter an international chess competition under cover on foreign soil in an effort to extricate a U.S. spy before her identity is exposed.

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.

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.

Programming to be announced.

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

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.

Sebastian goes under cover; Patton practices his old gambling skills; Pride and the team embark on a perilous plan to trap Garcia.

Sebastian goes under cover; Patton practices his old gambling skills; Pride and the team embark on a perilous plan to trap Garcia.

After Pride travels to a deep-sea oil rig for a murder investigation, the team uncovers a gas leak that's on the verge of causing a catastrophic explosion; Sebastian starts his NCIS special agent training.

After Pride travels to a deep-sea oil rig for a murder investigation, the team uncovers a gas leak that's on the verge of causing a catastrophic explosion; Sebastian starts his NCIS special agent training.

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.

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.

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.

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.

While conducting a profiling course on his birthday, Rossi gets a call from serial killer Tommy Yates, who gives him the location of his latest victim.

The team investigates when home invasions involving casualties strike upscale neighborhoods in San Diego.

The BAU investigates when a bizarre hieroglyph is found under a deceased homeless man's armpit; Reid decides to take his mother out of a clinical study early to bring her home.

The BAU team is called in to investigate when male bodies are discovered that seem to be impossible to identify.

When a BAU member gets in trouble in Mexico, the team enlists the services of the International Response Team for help.

The BAU looks into the cause of several fatal car crashes involving drivers and pedestrians; Reid gets bad news.

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.

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.

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.

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.