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.

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

On Christmas Eve, a boy is trapped in a beach-side cave, where the rising tide threatens his life; the team races to find a way to save him.

The team tries to help Ralph when he is taken by the FBI for questioning after his web game play unintentionally reveals a CIA safe house's location.

The team searches for a CIA mole who has been coerced into stealing deadly chemicals; Paige shows Walter how to flirt.

The team must help an injured former Secret Service agent regain his memory in order to stop the launching of weapons of mass destruction.

A kidnapped woman misdials a cell-phone number and begs for help, and the team must figure out the number and person she was trying to call.

The team has a long list of suspects, including a victim's wife, a magician and a captain, as members search for the killer of two people on a cruise ship docked in Miami.

A spoiled heiress is found dead in her bathtub during her own party, with no shortage of suspects; Horatio tells Delko that he and Marisol plan to wed as soon as possible.

The team is on the verge of putting away members of the Mala Noche gang, but the gang's planned hit on Horatio endangers the lives of those close to him.

Horatio mourns the murder of someone close to him as he and the team hunt for the killer; the revelation of the mole's identity jeopardizes the future of the lab.

The team discovers a Russian spy ring hiding on Oahu when a Russian submarine appears off the coast.

After McGarrett's CIA agent friend is killed, he lets himself be captured by the group he thinks is responsible to find the killer; Tani questions whether she should tell McGarrett about the murder weapon she found at Adam's house.

When a vacationing father on a flight to Honolulu is kidnapped and forced to parachute midflight, Danny, Tani and Junior track him through the jungle to discover that he may not be who he seems; McGarrett is threatened with a secret from his past.

A heat wave hits Oahu, contributing to a spike in crime; McGarrett and Danny hunt down a bank thief; Tani and Junior's car is stolen while they're on duty; Kamekona incites a riot by price-gouging his ice.

Jerry accompanies Junior as he escorts a fallen soldier home to Oahu; McGarrett and Danny discover a body when they delve into the highly profitable black market for sand.

On Halloween, Jerry and his friends search his childhood camp for evidence to a murder he witnessed as a boy; McGarrett investigates a little girl who drew pictures depicting the scene of a recent murder before it was discovered.

McGarrett crosses the line and is arrested while investigating the death of his former SEAL buddy who died while making an emergency landing on an aircraft carrier; Adam returns to Oahu with devastating news about his marriage.

McGarrett investigates a cold case that his grandfather and the famous Honolulu detective Chang Apana worked on in the 1940s; McGarrett and Danny get ready for the opening of their restaurant.

Grover's parents and brother arrive in Oahu for Thanksgiving; a thief is crushed to death by an empty safe.

When a renowned urban vigilante is killed after making a citizen's arrest, the team delves into the world of super heroes and comic books to find the killer; Adam gets closer to finding out who killed his sister.

After fighting off an assassin in his own home, McGarrett and Joe White flee to Montana to prepare for a battle against those exacting revenge for a past SEAL mission.

Still reeling from the murder of one of their own, Steve and Catherine, along with Danny, Junior and some old friends, hunt down the killer; a bag of human bones discovered inside an abandoned storage locker goes missing.

McGarrett and the team support Danny and Rachel by determining what happened when Grace gets into a life-threatening car accident; Tani helps Koa when his rehab patient goes missing.

Adam, Junior and Tani travel to the bottom of the Pacific Ocean when a murder takes place in a remote underwater lab -- and the killer may still be on board.

While investigating Flippa's friend's murder, McGarrett and Grover uncover a deadly plan by an extremist group on the Island; Grover has an emotional reaction to the case.

When Mac is put into a dream state to help him recall key evidence found in Nikola Tesla's secret lab that could stop Codex's deadly plot, he encounters Nikola Tesla, Alexander Graham Bell, Thomas Edison and his mother.

Mac is placed inside a fake prison cell with a top Codex operative, "The Merchant," to gain his trust and get intel on their next move.

The team is forever altered when MacGyver's Aunt Gwen gets into his head and convinces Mac and Riley to join Codex; Matty and Russ take their concerns about Codex to the White House.

Mac and Riley's mission is interrupted when Russ, Desi and the Phoenix team move to prevent Codex from detonating a weapon of mass destruction; the team discovers Russ' real reason for purchasing the Phoenix Foundation.

Mac and the team infiltrate a hotel used as a hideout for criminals and find a woman with vital information on Codex.

When Taylor's former protégé is killed while preventing a bioweapon from falling into the wrong hands, Mac and the team must find the weapon so Desi can pull off the ultimate heist before it's sold to a terrorist cell.

When Russ is kidnapped, Mac and the team must break out a previously murderous psychopath, now pacifist, from prison to help find him; while on the run, Mac and Desi are forced to confront their relationship issues.

Mac's meeting with Desi's parents goes sideways when her brother finds himself in trouble and needing their help; Russ and Matty must ask an old nemesis for assistance when their new recruitment candidate is kidnapped.

A mother steps forward with valuable information for the BAU to aid in their investigation of an unsub known as the bone crusher; Reid must adapt to a new set of rules in prison.

The BAU believes two unsubs may be operating simultaneously when victims killed in two different ways are discovered in the same city; the team grapples with keeping Reid safe in prison.

The BAU investigates an urban vampire who kidnaps his victims at night and holds them underground in the sewer system; Reid makes a difficult decision in prison.

The BAU is called to investigate after three victims are discovered tied to stakes in the brutal Arizona desert.

The BAU investigates when several federal government employees, including a close friend of Walker's, succumb to symptoms of a heart attack; Reid anxiously awaits his trial date.

When Reid fears his mother has been abducted, he asks the BAU to investigate while he's stuck in prison.

Morgan brings the BAU new information in the case against Mr. Scratch, a serial killer and escaped convict who has been wreaking havoc on the team.

Agent Matt Simmons joins the BAU team in a race to take down Mr. Scratch and save one of their own in the process.

The BAU investigates three similar crimes in which victims' remains are discovered in old suitcases.

When an anger-driven, unknown subject targets successful businessmen in Detroit, the BAU must investigate.

The BAU investigates a workplace shooting committed by a state-of-the-art drone in Silicon Valley.

Morgan returns to the BAU to help Penelope deal with a case that has affected her emotionally.

The BAU must find out what several missing women have in common to find them.

The BAU searches for a subject who is targeting prominent members of the community.

The BAU is called in to investigate when a criminal sensationalizes his crimes by giving the local media exclusive footage.

The BAU is called to investigate when two members of a conspiracy group in Roswell, N.M., perish in quick succession.

Horatio and Delko travel to Brazil in pursuit of Marisol's killer.

When Calleigh is run off the road into a canal, the evidence she is carrying becomes corrupted, so the team must uncover new evidence to solve the case.

After a celebrity is murdered at an A-list party, the team uncovers a counterfeiting ring producing $100 bills.

Male models' good looks may have cost them their lives; Natalia's abusive ex-husband begins stalking her at the lab.

A politician supports the use of eminent domain to clean up a neighborhood, and his dead body is later found in an empty house.

Bizarre incidents take place in the CSI lab after the team begins its investigation into the death of a Santeria practitioner.

A man is decapitated while performing a stunt, and Horatio believes his death was more than just an accident when he learns the hydraulics system had been tampered with.

While investigating a kidnapping and murder, the team finds a safe with dozens of pictures of missing women; as the team tries to find Boa Vista's kidnapped sister, Horatio must find the killer.

The team's investigation into the death of a young woman, killed after being auctioned off at a charity event, leads to a plot that could put the entire city in jeopardy.

When a Marine recruiter is murdered, the team delves into the world of military enlistment to try to find the killer; Natalia must face her ex-husband when he asks out one of her co-workers.

The team must find a suspected terrorist, who goes on the run after a failed attempt on her life.

Horatio, the lab's night shift and Calleigh's ex-boyfriend must find evidence that proves Natalia's innocence when she is accused of her ex-husband's murder.

Extensive plastic surgery hides the identity of a body whose parts were found near an airport.

When a woman's burned body is found in a car with evidence that her child was kidnapped, Brennan and Booth's investigation leads to a suspect who is in the Witness Protection Program.

Brennan and Booth's investigation identifies a decomposed body found in a local alley as that of a friendless teen.

Booth and Brennan investigate when police find the dug-up corpse of a young woman in the trunk of a Salvadoran gang member's car.

At the scene of a plane crash involving Chinese diplomats, Brennan finds three small bone fragments that did not come from the plane and might have something to do with a local man who went missing five years earlier.

Brennan tries online dating but ends up the target of a shooting when she tries to meet her date at a local restaurant.

When the remains of a filmmaker are found in the ventilation shaft of an underground tunnel, Brennan and Booth discover a subterranean world of homeless people.

The investigation of the bones of a shooting victim leads to a counterfeiting ring.

When a body is found clutching a 300-year-old finger bone, Booth and Brennan's investigation leads them to a dive site where a pirate may have buried his treasure.

Brennan wakes up in the bathroom of her New Orleans motel room, bloodied and beaten with no memory of what happened.

While examining a young girl's cancer, Brennan and Booth uncover a bone-smuggling ring.

Booth and Brennan's investigation of an apparent suicide of a protester in Arlington National Cemetery may lead to a military scandal.

A performer's life is threatened, so Toby poses as her assistant and helps to investigate.

An African teenager, whose father is an alleged war criminal, is abducted.

Toby's telepathy acts as surveillance when Michelle goes under cover to expose an art-theft ring.

Toby and Michelle investigate the connection between a cult and three missing young women.

The team tracks a suspect who shares the same style as a serial killer from 30 years ago; someone tracks the BAU's cases and replicates crimes.

With the help of the BAU team, Reid tries to find his girlfriend before it's too late.

As Reid deals with a personal loss, the rest of the team heads to San Francisco after victims are found in the Mission District.

When an author's daughter goes missing on the anniversary of his wife's disappearance, the team investigates the author as a possible suspect.

The team heads to Austin to investigate when victims with watches set to inaccurate times are discovered; the team's stalker gets closer.

Victims of the Replicator, the BAU's stalker, turn up in Philadelphia; the members of the team think they are getting close to apprehending their suspect.

The team investigates victims who were sharing details about their personal lives and inner desires online; Kevin becomes jealous when he finds out that Garcia might have a new love interest.

When the team goes to Morgan's old neighborhood to track an UnSub targeting middle-aged men, Morgan suspects they are looking for someone connected to the man who abused him as a child.

A 25-year-old time capsule opened in a small Colorado town reveals a gruesome discovery and a possible connection to a local police officer's death.

The team heads to Rapid City when two men are murdered in a ritualistic way; Reid mourns Maeve's death.

The BAU team heads to Los Angeles in search of a suspect who kidnaps nannies and the children they care for.

The team tracks a suspect targeting people in Detroit; Blake receives a life-changing proposition from her husband (D.W. Moffett).

The team investigates a series of deaths in Manhattan that seem to be related to ecstasy overdoses; Hotch makes a discovery about his estranged brother.

When the Replicator returns, a member of the BAU team is targeted.

The team tracks an increasingly devolving killer to Arizona; the team suspects Hotch is in the running to be the unit chief.

As the hunt for a ritualistic killer continues, a bizarre familial connection could help the team zero in on the suspect.

The BAU team must determine if the anniversary of the Kennedy assassination is a motivating factor when a sniper strikes Dallas.

The BAU team meets the new section chief (Esai Morales), who shares a long history with J.J.; an unknown subject leaves victims unable to communicate.

As Hotch fights for his life after being stabbed, he has visions of his late wife and his nemesis; when a teen goes missing, suspicions arise about her estranged father.

Ritualistic murders lead the team to believe their suspect may have a fascination with the Salem witch trials; Garcia plans a Day of the Dead celebration.

Using a cryptic postcard as their only clue, Mac and the team must solve a fallen friend's final case and bring him justice.

During COVID-19's first stay-at-home order, Mac, Bozer and Riley must stop a crime in progress at their neighbor's house; Russ' romantic fling takes on a longer and more complicated turn when they quarantine together.

A secret experimental cancer treatment Mac's developing with a friend is discovered when culprits ransack their lab, kidnap Mac's partner and plan to use the research to create a powerful new nerve agent.

Mac and team rush to help when Matty's former mentor, Ian Cain, and his embassy staff come down with a deadly, mysterious illness; Taylor and Bozer work with Jerry Ortega to infiltrate a Codex cell.

When Mac and the team are unable to prevent sensitive intel from falling into Codex's hands, Mac must scale a vertical cliff using only gear he can cobble together himself to prevent the info's transmission.

While on a mission to hunt down a Codex lead, Mac and the team discover Murdoc hacked their comms and has recorded them for months.

Mac and Riley head overseas together to prevent a governmental collapse and inadvertently inhale new, deadly microscopic technology.

Mac, Desi and Russ go under cover during a royal Indian wedding to protect a princess whose policies could put her life in danger; Bozer suspects Riley is up to her old hacking ways.

The team investigates the death of a country music singer whose remains were found in a shallow grave; Brennan takes a look at Wendell's injuries after he breaks his arm during a hockey game.

Sweets goes undercover in the chess world to find a killer; Cam gets a science award but fears offending Brennan, who feels she deserves it; a sunny new podiatrist intern annoys Brennan.

The team investigates the murder of a kidnap victim whose remains were found at a park; Hodgins makes a discovery about his family; Brennan and Boothe consider co-mingling their money.

Booth and CIA agent Danny Beck (Freddie Prinze Jr.) must track down a terrorist after a CIA informant is murdered; Brennan and Booth must consider the ramifications when Brennan wants to do more work in the field with Booth.

When the remains of a repo man are found in a septic tank, the team learns he had a troubled past; a forensic anthropologist (Ignacio Serricchio) who has defected from Cuba needs an internship.

When an actor known for playing a popular character on a kids' TV show is murdered, unexpected suspects are discovered; Brennan and Booth plan a party for Christine's birthday; Clark asks for opinions on his novel.

When a wealthy artifact collector walks into his own funeral, the team must determine the real identity of the deceased; Finn's new hot sauce venture is making big money.

The remains of a former art student are found in a log in a forest; Wendell returns after beginning cancer treatments; Booth prepares for an FBI competency test.

The team investigates the death of a woman whose body was cryogenically frozen before being dumped in a swamp; Cam is nervous to meet Arastoo's parents; Booth is up for a promotion.

When the remains of a woman from a wealthy family are found in a national park, the team thinks she may be a victim of the Ghost Killer; Booth's career might be in for some changes.

When the head swim coach of a community college is found dead at the bottom of the well, possible suspects think he may have been having an affair; a new intern (Laura Spencer) catches Sweets' attention.

A man who wanted to talk to Booth about a possible government cover-up is killed before their meeting takes place; as Booth and the team investigate the conspiracy surrounding the man's death, Booth's future with the FBI becomes uncertain.

As Brennan and the team try to absolve Booth and get him out of prison, the remains of a man who has been dead for 16 years prove to be significant; Booth encounters criminals he was responsible for incarcerating.

The team works with Special Agent Aubrey to investigate a far-reaching conspiracy in the government; DNA found on a previous victim linked to the scandal helps the narrow down the suspect pool.

With intern Rodolfo's help, the team investigates the murder of a conservative radio host whose remains were found in a storm drain; Special Agent Aubrey endeavors to gain Booth's trust; Brennan worries about Booth's mental health.

The team and Special Agent Aubrey investigate the murder of a video game designer; intern Jessica talks about the educational cooperative with which she has been involved; Brennan and Booth talk about Christine's future.

A retired SEAL -- who tracked people impersonating military personnel -- is murdered; Brody finds that LaSalle is uncharacteristically unenthusiastic about Christmas.

The investigation into an explosion at the Navy-Marine Corp Relief Gala reveals Pride was the bomb's target.

The NCIS team and the Coast Guard Investigative Service work together when a Navy Admiral's daughter is the prime suspect in a double murder on a research boat; Lasalle looks for his estranged brother.

After learning he was poisoned with a deadly dose of radiation, a Navy lieutenant commander asks Pride and the team to solve his imminent murder.

An agent is killed while working on a security detail for the Vice Chief of Naval Operations; Brody's past is evaluated.

A petty officer is murdered during Mardi Gras festivities; Pride contemplates what to tell his daughter about his strained relationship with his father.

After a famous photographer is murdered while doing a magazine shoot, Danny is happy to learn that he will be interviewing the swimsuit models.

After receiving valuable information from Agent Jenna Kaye, the team closes in on Wo Fat; Danny is exposed to a deadly neurological agent.

The Five-0 is targeted by Wo Fat after getting too close to the truth about the criminal mastermind and his associates.

While McGarrett awaits trial for the murder of the governor, he receives an unexpected visit; Kono is suspended.

Lori Weston, an officer with excellent profiling skills, joins the Five-0 to ensure McGarrett and the team follow new rules set in place by Gov. Denning; a teenage paddleboard champion is abducted.

Joe White, McGarrett's mentor, asks the team to investigate the death of a Navy SEAL, which was previously ruled a suicide; Chin Ho is concerned when Kono starts fraternizing with a group of dirty ex-cops.

The team investigates the murder of a deep-sea diver famous for the valuable treasure he finds.

The team's investigation into a volleyball coach's murder reveals more bad news about Kono; Chin Ho reconnects with his ex-fiance.

McGarrett takes part in a charity MMA fight while investigating a wealthy restaurateur's murder; NCIS Agent Kensi Blye examines a video of McGarrett's father.

Two young people filming a documentary about a Hawaiian burial site are murdered; during the investigation, a drifter (Robert Englund) puts a curse on Danny.

The investigation into a plane crash reveals the customs agent on board was dead before takeoff; Danny cares for an orphaned dog.

The physically altered corpse of an unidentified man is found in the trunk of a stolen car; Danno crashes on McGarrett's couch.

McGarrett travels to North Korea with Jenna Kaye to deliver ransom to rebels holding her fiance hostage; the team investigates the murder of an investigative reporter who appears to have connections to Jenna.

McGarrett and the team search for a missing bus full of school children and those responsible for the crime.

On the night before Chin Ho's wedding, the team's investigation into a man left to die in an abandoned bunker intersects with Capt. Fryer's case.

When a teenager is murdered, the team must determine why she was targeted and if the person responsible was a hired professional.

The team members go under cover on a cruise ship in order to locate and disable stolen rockets; as Valentine's Day approaches, Ralph develops a crush.

The members of the team travel to Mexico when the daughter of a tech billionaire is abducted; Walter participates in an interview that leads to hurt feelings.

The team must facilitate peace discussions when a conflict in Eastern Europe threatens to escalate into World War III.

As the members of team Scorpion try to save lost hikers, their helicopter crashes, igniting a large wildfire and injuring the pilot.

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.

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.

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.

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.