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.

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.

The team hunts a killer who is fatally shooting seemingly unrelated targets; new agent Tiffany Wallace experiences tension between her work as an FBI agent and the responsibility she feels to her community as a Black woman.

The death of a prison gang member leads Fontana and Green to suspect the victim's former associates until they learn the deceased also had a running battle with a hard-nosed corrections officer.

Detectives investigate the deaths of two college students and find both were participating in a pharmaceutical company's secret testing program for an antidepressant that has resulted in many suicides.

An illegal firearms sting backfires when two officers are slain, and Green poses as a gun buyer to try to capture the killers, who were able to identify the officers via a Website identifying undercover cops.

McCoy must determine whether charges should be filed in civil court or in criminal court when a novelist's death seems to have been caused by careless liposuction, but Branch finds a recurring pattern of negligence by the doctor.

McCoy takes the issue of gay marriage before the state's Supreme Court when he is unable to compel a man to testify against a crooked developer because the two say they are married.

The detectives proceed with skeptical caution when a radio personality, known to stage fake muggings for publicity, claims to have been shot and almost killed.

A philandering jeweler with ties to the Russian mob is one of four people shot to death on a sidewalk, and Fontana and Green learn the victim was cooperating with federal authorities until his murder.

After a bloody massacre of heroin dealers, Fontana and Green pinpoint a drug-dealing Afghan warlord as their primary suspect, and McCoy and Southerlyn prosecute despite pressure from the State Department.

Fontana and Green reluctantly investigate after a motorist strikes a child-murderer and leaves him for dead, and the evidence they uncover leads McCoy to a startling discovery.

When a wealthy venture-capitalist is found dead in his home, Fontana and Green zero in on the victim's young wife (Andrea Roth) and her contractor boyfriend (Daniel Sunjata).

Evidence in the shooting death of a rap legend seems to point to his young protégé (Sean Nelson), who has been cutting his own music on bootleg CDs, so Fontana and Green listen for clues in the lyrics.

When nine flu victims suddenly die, Green and Fontana learn that all had been injected with a fake vaccine, which leads to the arrest and prosecution of a longtime con man.

When a controversial conservative talk-show host is shot to death, detectives sift through many possible suspects, eventually focusing on the man's widow and a woman who may have been stalking her.

A man strangled in his rent-controlled apartment leads detectives to the building's owner, who wants to convert the building to a co-op, but a basketball player's fingerprints are found at the scene.

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.

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.

Following a tip about smuggled weapons, Bishop and Torres engage in a shootout in a former sheriff's residence that's now a historical site, only to find themselves locked in abandoned jail cells there.

NCIS investigates the murder of a Navy officer who was killed while driving home a recently released inmate; Gibbs helps Palmer deal with a personal trauma.

When Sloane's name is discovered in Afghanistan at the site of an abandoned bus with a dead driver, Gibbs accompanies her on a trip to find a group of girls who were kidnapped from the bus; a hacker emails compromising information to the Taliban.

NCIS dives into the competitive world of food trucks after finding a man frozen to death in the back of one.

The team uncovers a secret dogfighting ring, which leads to an unexpected move by one of the team members.

Gibbs and Fornell's crusade to find the head of the drug ring responsible for Fornell's daughter Emily's overdose comes to a climax; Gibbs and Vance finally let the team in on a case that has dangerous implications.

Vance assigns McGee, Torres and Bishop to COVID compliance duty at a foreign affairs summit, where they discover a link to another NCIS team's murder case.

Evidence from the stabbing of a Marine sergeant leads Torres to meet his father, who left when Torres was a child.

After a bomb leaves three people dead, the team presses a reluctant informant to gather information from his close friends who are under suspicion; OA and his girlfriend clash over where the informant's rights lie.

When a reporter is kidnapped and held without a ransom demand, the team must dig into her past relationships in order to pin down her assailant's motive; Isobel's relationship comes under fire when the case makes a connection to her boyfriend.

The team must track down two assailants who wear animal masks while committing armed robberies; Tiffany and Scola butt heads on whether to accept the local NYPD's offer to help in the investigation.

After a man is killed by an explosive package shipped to his home, the team attempts to capture the sender and intercept his latest deadly parcel; Maggie struggles to trust her younger sister.

After they uncover evidence of fraud within their company, two novice insurance accountants try to hide the fact that their boss has been murdered when they are summoned to his home for the weekend.

An overworked air-traffic controller takes his family on a beach vacation but is soon beset by series of mishaps.

After they uncover evidence of fraud within their company, two novice insurance accountants try to hide the fact that their boss has been murdered when they are summoned to his home for the weekend.

An overworked air-traffic controller takes his family on a beach vacation but is soon beset by series of mishaps.

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.

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.

The team investigates a biker killed in a hit-and-run; Gibbs prepares to testify against a financial adviser who stole millions from his Navy clients.

NCIS tracks a stolen laptop to the uncle of a young boy, Phineas, Gibbs' former neighbor.

When members of an NCIS Regional Enforcement Action Capabilities Training Team are killed during an explosion, NCIS Special Agent Jessica Knight, the lone surviving member, helps crack the case using high-tech body armor.

While pursuing a dangerous arms dealer, the team is shocked when Bishop is implicated in an old NSA leak; Gibbs and Marcie realize the killer they've been tracking may be onto them.

As the NCIS team searches for Gibbs after wreckage from his boat is discovered; they find out he was tracking a serial killer with journalist Marcie Warren, who wrote an exposé on him.

The team uncovers a sinister plan when a controversial DJ and a naval officer are shot to death.

Abby becomes fixated on solving a murder; DiNozzo's latest fling leads to an interesting Halloween.

Dinozzo's father (Robert Wagner) returns and plays an important role in a murder investigation.

The team must protect Ziva's father when his attendance at a convention leads to surprises.

Following a deadly attack, one member of the team reminisces.

A Naval petty officer and sole witness in an upcoming murder trial disappears.

The team partners with a Coast Guard Investigative Service agent to solve the murder of a Marine on a dinner boat.

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.

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.

A petty officer is murdered while in town to help a refugee family; Wade works on the special election campaign for Mayor Zahra Taylor that takes place during Mardi Gras.

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.

McCoy and Borgia target the unlikely hero who pursued a mass murderer through the streets of Manhattan in a deadly car chase that left one dead and one injured.

A celebrity chef comes under suspicion in the murder of a TV network executive when Fontana and Green learn that the two were having an affair and the chef's cooking show was about to be canceled.

While investigating a woman's murder, Fontana and Green uncover a cult that encourages sexual relations with children, and Borgia determines to put away its mesmerizing leader (Deborah Hedwall).

A promiscuous lawyer ends up bludgeoned to death in her office, and detectives treat her former lovers as suspects until DNA evidence points to a co-worker.

Fontana and Falco (Michael Imperioli) must tread lightly when they discover links between a powerful police commissioner and the murders of an infamous porn actress and a maverick publisher.

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 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.

The team rushes to track down two doctors abducted by a desperate father willing to do anything to save his son; Jubal's uncertainty in his family life affects his judgment during the hostage situation.

When the CEO of a major brokerage firm is killed while surrounded by protesters, the team looks into who had the most to lose from his company's perceived manipulations; Scola's previous Wall Street career and the reasons he left come to light.

While investigating a mass casualty incident at a New York City restaurant, the team scrambles to determine if it was racially motivated and if there was more than one gunman; Maggie starts to notice troubling behavior from her co-worker Elise.

When five prominent men are gunned down at a trendy New York restaurant, the team's investigation brings them into contact with a lieutenant in Antonio Vargas' cartel, triggering a showdown between Isobel and Vargas.

After a young woman is killed on her way home from a lavish yacht party, the team investigates who she was and how she came to be at the event.

Maggie, OA and the team must stop a hacker who is disabling life-saving equipment in several New York City hospitals; Jubal's son waits for important surgery at one of the impacted hospitals.

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.

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..

Dr. Mallard's predecessor, Dr. Magnus, joins the team to help solve a murder at a college fair.

The team investigates when a Marine is found beaten to death in his backyard.

While investigating a naval commander's death, the team undergoes required psych evaluations.

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.

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.

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.

The team finds a connection between bombings and a private veterans' club in New York City; Isobel tells a reluctant OA to recruit a former Army buddy for intel.

The team hunts for a serial killer who is targeting young, homeless men; Tiffany and Scola don't see eye to eye on how to handle the case.

After a suburban woman is kidnapped from her home, the team looks into trysts on both sides of a seemingly perfect marriage; OA feels pressure from Mona to make changes in his career path.

The team must track down a shooter targeting detectives from the same precinct and unit while facing mounting tension from the NYPD; Tiffany finds that her NYPD roots may be influencing her view of the situation.

After a young girl is kidnapped from her daycare, the team must help her parents navigate a debt owed to the deadly gang in their neighborhood; Maggie struggles to focus on the case when her sister returns from rehab.

A widow is shocked that her new "boyfriend" is the manipulative leader of a terrorist group planning an attack; Scola is reminded of his brother's death on 9/11; Tiffany worries about his emotional choices during the investigation.

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.

After a suicide bomber tries to assassinate the Belgravian Defense minister, the team must protect his daughter, who is studying in the U.S.; Gibbs looks into the death of a Marine who was killed in the bombing.

A murdered Marine's fingertips and teeth are found in a stolen purse.

The brutal murder of a former investigative assistant connects to a crew planning to rob a woman's warehouse; a new special agent (Sarah Jane Morris) arrives at the office.

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.

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.

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.

After Rina is critically wounded while heading to work with Jubal, the team makes the chilling discovery that a vengeful Vargas orchestrated the shooting from behind bars and continues to target the rest of their team and their loved ones.

As the team investigates a string of jewelry store robberies that culminate in a double murder, they uncover a connection to a 16-year-old boy trying to survive the foster care system.

The team searches for an abducted college coed; Jubal has a tense encounter with Rina's mother.

Maggie goes undercover working in a bar to investigate an anti-government group that regularly gathers there; a single father on the periphery of the group begins to fear he's in danger of becoming collateral damage.

When a Muslim college student and his younger brother are murdered, the team connects with the outraged imam of OA's former mosque, who insists the victims were wrongly targeted as terrorists.

The team investigates an extremist gun group after an anti-gun lobbyist building is bombed; SAC Bashar dangles a possible promotion for OA.

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.

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

Gibbs is suspicious when Vance asks him to interrogate a teenage boy accused of killing his retired Marine father.

A message in blood left by a murdered officer leads NCIS to a manuscript that may contain classified information.

Special Agent Barrett investigates a death she believes is connected to a series of murders; Ziva introduces her boyfriend to the team.

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 fiancé.

A murder in a Florida community of sex offenders results in many 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.

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.

The team investigates the murder of a Navy intelligence officer killed during a conference for foreign diplomats; Pride has some trouble adjusting to his new position at the agency.

An investigation into the murder of a petty officer reveals a conspiracy in a tight-knit local fishing community; LaSalle awaits the final results of the tax fraud investigation into his family's company.

Pride's father, Cassius Pride, is wrapped up in an NCIS case involving a notorious unsolved casino heist; Pride meets a family member he never knew existed.

The team realize they have a cross-country serial killer on their hands; the case has ties to Isobel's father, Robert, and his hotel, leading to revelations about their fractured relationship.

After an immigration agent is fatally shot at a hockey game, the team attempts to find the shooter, who they believe may also be targeting Congressman Curtis Grange, who was at the same game.

When a young couple is found murdered in a New York City park after returning from a vacation, the team searches for a suspect linked to the drug trade; Scola turns over a new leaf when it comes to his relationships.

OA is forced to confront one of his biggest fears when the team discovers that deadly sarin gas may have been sold to terrorists.

When a morning show host is murdered inside her home, the team tracks the killer; things become awkward for Scola when agent Nina Chase becomes part of the team during Maggie's recovery.

A killer is using drug mules to exploit airport security checkpoints; OA struggles to cope with the aftermath of the sarin gas exposure and the 10th anniversary of his army friend's death in Afghanistan.

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.

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.

After Pride's assistant escapes from a kidnapper, the team uncovers evidence of a suspect who is harvesting organs from multiple victims; Pride turns to a friend for guidance as he struggles with the ramifications of his recent brush with death.

Following a deadly car explosion in the French Quarter, the team interrogates a professor and former member of a student protest organization; Tammy discovers a secret about Hannah's personal life.

The team places Mateo Diaz, a high school gang member turned informant, in protective custody while they investigate the murder of his junior reserve officers' training corps instructor; Pride needs his brother's help to gain Mateo's trust.

The team investigates the murder of a Navy contractor who secretly lived two lives for decades.

While trying to find the serial killer Gibbs was after, the NCIS team discovers another person has been tracking the case as well.

Gibbs and Parker go on a road trip to find one of the serial killer's victims; Agent Knight goes undercover at a large manufacturing company with ties to the murders.

Gibbs and McGee head to Alaska while the team works at home to uncover the conspiracy behind the serial killer.

The NCIS team investigates the death of a Navy commander whose body suddenly explodes before Jimmy can examine it.

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.

A murder in the Louvre Museum and clues in paintings by Leonardo da Vinci lead to the discovery of a religious mystery that could rock the foundations of Christianity.

Harvard symbologist Robert Langdon joins forces with an Italian scientist to prevent an ancient brotherhood's plot against the Vatican from coming to fruition.

A murder in the Louvre Museum and clues in paintings by Leonardo da Vinci lead to the discovery of a religious mystery that could rock the foundations of Christianity.

Harvard symbologist Robert Langdon joins forces with an Italian scientist to prevent an ancient brotherhood's plot against the Vatican from coming to fruition.

The team investigates the murder of a Navy contractor who secretly lived two lives for decades.

Pride is given a series of tasks to complete by unknown assailants who are holding Wade and his father hostage.

Pride and the team hope to take down a secret and lethal group of former intelligence agents and avenge the death of someone close to them.

While undercover, Gregorio joins a social club for military wives after one of the members is contacted by an ex-boyfriend who is on the FBI's most wanted list.

NCIS investigates the disappearance of a Navy entomologist after a deadly shooting at a research lab; the team finds that a rare and deadly virus was stolen.

Pride and the team reunite with conspiracy journalist Oliver Crane after the source for his latest story is murdered; Hannah's former partner, Liam Somers, surprises her and shares a shocking revelation about an old case.

The team investigates multiple murders tied to a construction company that creates an experimental chemical that strengthens sea walls; evidence from Hannah's previous mission in Oman is used against her.

After an elusive terrorist with a personal vendetta against Hannah resurfaces, she and her family are placed in protective custody while the team searches for the suspect.

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.