McGarrett turns to Odell Martin (Michael Imperioli) for help when a confidential informant is accused of murder.

A Russian spy steals a flash drive containing classified information that puts a Five-0 member at risk; McGarrett learns why Catherine left; Abby keeps her mission a secret.

The body of a man left for dead off the coast of Oahu leads Five-0 to a deadly slave trade business that is operating aboard a fishing vessel.

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.

Mac and the team delve into the world of Italian car culture to track down a crime boss; Mac must lean on Desi when he discovers that he's losing the ability to control his hands; Mac and Desi move in together.

Mac and Desi travel with Bozer to his childhood home when his aunt dies in a tragic accident; they soon discover she may have been murdered for trying to expose the city's contaminated water supply.

Mac and Riley go missing and wake up 24 hours later in a cornfield with no memory of how they got there; they must unravel the mystery and find out how to get rid of the nanotrackers in their bodies, no matter the cost.

Special agents for the Department of External Services, Angus "Mac" MacGyver and Jack Dalton, work to recover a missing bioweapon.

MacGyver and the team attempt to rescue Jack's former CIA partner who went missing in Venezuela after finding evidence to take down an international arms dealer.

In Malaysia, MacGyver and the team extract a terrorist group's money man who has intel on an impending attack, but when the man is shot, MacGyver must keep him alive in order to learn the terrorists' plans.

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.

A series of strangulations leads the team to look for a killer who keeps mementos of his victims; Rossi's favorite bar is in danger of closing.

The team searches for missing teens who are suspects in a series of mass murders in Chicago.

When skeletons are discovered in the backyard of a home in Virginia, family secrets and past racial divisions are brought to light.

When a young boy disappears from his home in St. Louis, the team examines a similar cold case for clues.

Blake must work with her retired police captain father and her detective brother to solve a series of murders in Kansas City.

A murder investigation results in Garcia delving into her hacker past -- and reconnecting with a former flame.

As the team searches for a vigilante killer in Cleveland, Rossi's former Marine sergeant goes missing in Los Angeles; J.J.'s secret catches up with her.

The BAU learns of JJ's kidnapping, they discover that Cruz has also been abducted and delve into the files of a classified assignment; the team uncovers details of INTEGRITY, the covert database born out of the operation to find Osama bin Laden.

The team searches for a pair of suspects responsible for several murders near Pittsburgh; Morgan and Garcia make Valentine's Day plans with their significant others.

The BAU makes startling discoveries as they search for a 4-year-old girl who went missing while staying with a relative.

The BAU must determine the true cause and motive when several drowned people are discovered in the Las Vegas desert.

Three bodies bitten by humans and animals are found in a shallow grave; Garcia and Reid hide their preparation for a company fitness test from Morgan.

Morgan's visit with a survivor of unusual stabbings in upstate New York leads to more questions about the case.

The discovery of two murder victims in West Virginia uncovers a long-simmering feud between two families.

The team investigates the death of a professor, who was found hanging from a tree after being tortured.

Team members meet an environmental lawyer who has radiation poisoning after they are exposed to radiation during an investigation.

The team investigates the murder of a man found stabbed in a peep-show booth, finding non-human hairs on the victim's body.

A man stands trial for a murder he didn't commit, while Horatio and the team race to find the real killer.

Routine disposal of drug evidence goes horribly wrong, leaving two police officers dead and the CSI team under investigation.

Horatio wants to question a murder victim's boyfriend, but the FBI won't divulge his location; Calleigh's father pays a visit.

An ex-con asks Horatio to help him find his missing son; Speedle investigates a man's death by asphyxia.

Marks on a female corpse on a beach lead Horatio to think the perpetrator is a serial killer who bites victims; Calleigh and Delko investigate a murder at a motel pool.

The team investigates when a fire engulfs a popular night club, killing 16 people and injuring 58 others.

The team delves into "tweaker" culture after a brutal murder is followed by a near-fatal explosion at the home of a methamphetamine addict.

Horatio witnesses a dramatic prison break and later discovers one of the escapees is a child molester/murderer he put away six months earlier.

A playboy who enjoys diplomatic immunity becomes Horatio's prime suspect after a model is killed in a hit-and-run accident during Fashion Week.

When a corpse is discovered in the woods, the team considers two families involved in a nearly century-long feud; Brennan is apprehensive when her father (Ryan O'Neal) offers to baby-sit for her daughter.

While in Los Angeles to consult on a film based on her latest book, Brennan discovers the prop cadaver being used is a murder victim; Booth gets a job offer; embarrassing information about Cam's past comes out.

When a past suspect is back in court on appeal, Booth and Brennan work to prove he is guilty once and for all; Brennan becomes a suspect.

After Brennan is accused of murder, her father (Ryan O'Neal) helps her hide from the FBI; Booth and the team think an evil tech genius (Andrew Leeds) manipulated evidence to implicate Brennan.

A powerful divorce lawyer with a lot of enemies is murdered; the three-month separation between Booth and Brennan starts to take its toll.

After an explosion in a hotel garage, the Jeffersonian team tries to identify victims by investigating remains found at the scene; Sweets works with a temporary partner (Danielle Panabaker) while Booth works on the department's budget.

While investigating the death of an animal expo employee, the team is drawn into the world of animal trafficking; Brennan thinks she would be a good presidential candidate; Sweets and Daisy make a change.

The team investigates the death of a woman whose body was found in the trash; Booth invites Sweets to stay with him and Brennan until he finds a new place.

While examining bodies deemed unidentifiable, interns uncover the identity of a man who died in the 9/11 terrorist attacks.

A pod containing the remains of a crime-scene cleaner washes onto a beach; Angela and Hodgins learn a secret about Cam.

When a street artist falls into his own adhesive, he also lands on human remains that stay glued to his body; Booth searches a comedy club for suspects.

When a psychic tries to help the spirit of a boy whose death the team is investigating, members of the team start to question their own feelings on life and death.

When Toby sees a woman revive a badly injured baby, he becomes curious about her gift.

Toby uses his gift to help Detective Marks gather intelligence from the traumatized victim of a serial rapist.

When the only witness to a double murder is unable to speak, Toby reads his mind to determine what happened.

Toby and Olivia learn that Oz's parents' restaurant is in trouble; Toby uses his telepathy to try to solve a missing persons case.

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Mac and Jack work with a Russian bomb programmer and his alienated handler to defuse a Soviet-era warhead in Moscow; when the antiquated computer breaks down, Mac must find a way to fix it.

MacGyver must fix a sabotaged train to protect a woman who has proof that her boss is selling weapons to enemies of the U.S.

MacGyver must diffuse a bomb planted near the United Nations by his old adversary, the Ghost, then track the criminal down.

When MacGyver goes under cover to break a notorious drug kingpin out of a maximum security prison, he must track the fugitive to the cartel's location to dismantle it after they escape.

When MacGyver faces an international assassin hired to kill him, he must defend both himself and Bozer with only a corkscrew and paper towel rolls; Bozer learns MacGyver's true identity.

In Latvia, MacGyver and his team must defend themselves and a group of U.S. embassy workers from extremists trying to retrieve their leader; Bozer faces an important decision.

Mac and the team search for a kidnapped prodigy from Mac's former middle school; with only pliers and some wire, Mac attempts to rescue the young genius.

MacGyver and Jack must find Riley after she disappears and hacks into the NSA; Bozer embarks on his first mission; Jack reveals his history with Riley's mother.

Dr. Sweets deals with post traumatic stress after his subway train is derailed by flood water; a partially skeletonized body is discovered.

Recounting the events of the first case on which Brennan and Booth worked together; how other Jeffersonian team members' relationships began.

Brennan returns to her former high school to investigate when unidentified human remains are discovered; Booth and Brennan pose as a married couple at her high school reunion.

Brennan and Booth are asked to identify human remains found inside the belly of a shark; a marine biologist (Rena Sofer) is interested in Booth.

When the body of a rich adventure-seeker is found in a hotel laundry machine, Booth and Brennan are led to the last place he was seen: a Rock 'n' Roll Fantasy Camp.

When a cabin in the woods burns down, the bodies of two witches are revealed; Angela and Hodgins are arrested.

Everyone at the Jeffersonian tries to uncover forensic evidence to help elicit a conviction in the trial of the Gravedigger.

The remains of a hoarder are discovered; Angela's father (Billy Gibbons) visits; Booth and Brennan are each confronted with unique opportunities.

The team helps Cam solve the case of an unidentified boy; after making personal discoveries, the members of the team realize they belong in Washington, D.C.

The remains of a couple are found in a cave; Brennan re-evaluates her relationship with Booth when his girlfriend makes a surprise visit.

Brennan and Booth head to the Jersey Shore when decomposed remains are discovered; the team becomes fond of Booth's girlfriend; Angela tries to keep a secret.

When a skull and decomposing hands are found in a dumpster, the team searches for the rest of the victim's remains; Brennan agrees to shoot an episode of a children's show with professor Bunsen, "The Science Dude" Jude (David Alan Grier).

The skull of a promising young dancer is discovered at a construction site; Hannah's safety is jeopardized when an assignment takes her to a dangerous part of town.

Human remains from a 150-year-old slave ship surface; the investigation leads Booth and Brennan to a cruise where a murder victim is seen moments before his death.

An event for a candymaker (Wayne Knight) turns bitter when human remains are discovered in the world's largest chocolate bar; Cam struggles with her daughter's decision to attend a college that fails to meet her high standards.

Brennan and Booth investigate a crime scene where a human carcass has melted to the dashboard of a charred truck; Sweets tries to keep his feelings for Daisy from interfering while helping her pass a government psychological evaluation.

Pride believes Baitfish has returned and has the NCIS team chase down leads in an attempt to locate him.

When a sailor is killed in a strip club, the murder weapon turns out to be linked to other unsolved cases; Brody receives a visit from her ex-fiance.

During the autopsy of a petty officer who seems to have died of natural causes, an armed man holds Wade, Sebastian and Danny hostage in the morgue.

When a Navy commander's car is stolen with his baby inside, the team must determine if it was a targeted abduction.

LaSalle's brother, Cade, needs the team's help when he becomes a murder suspect -- and cannot remember what happened; LaSalle is determined to prove Cade's innocence, despite the wealth of evidence against him.

Baitfish murders a person close to the team in order to send a message to Pride; a citywide hunt for the elusive criminal takes place.

Pride has suspicions about a mole; new intelligence comes to light that indicates a breach at the ports.

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.

Grover must prevent a man who is accused of killing his wife from committing suicide.

The corpse of a diamond smuggler is stolen from a graveyard; Five-0 tracks down his partner, who is determined to retrieve their latest batch of contraband; Adam recruits a new, confidential informant; Tani gets a devastating call.

McGarrett and Danny investigate the murder of a private detective whose client was killed the same way; Adam sends Jessie into a dangerous situation with disastrous consequences; Danny's uncle comes to town to help with the restaurant.

Tani and Junior go under cover as prospective parents to infiltrate a private school where the headmaster was murdered; Adam's life is on the line when he is held captive and forced to produce a massive amount of money.

Adam's mission to take down organized crime goes sideways when the bait he uses falls into the wrong hands; Adam begins to doubt Jessie's allegiance.

The ex-wife of the man who shot Danny reveals how Danny helped save her life; Tani and Junior are assigned to walk the beat as uniformed officers for the day; Adam is framed for the murder of the crime boss he has been tracking.

A hit man McGarrett's father failed to arrest comes to McGarrett to finally confess his crimes and admit where he buried his victims; Jessie makes a dangerous decision that could ruin Adam's life.

Catherine Rollins recruits McGarrett and Jerry to help track down uranium thought to be hidden on an abandoned Hawaiian island before a terrorist makes dirty bombs with it; Junior gets trapped in a ravine.

Harry Langford enlists McGarrett and Danny's help to track down a teenage British royal who has run away while under his protection; Grover, Tani and Junior work a 25-year-old murder case after a mysterious videotape arrives at headquarters.

Duke is forced to steal crucial evidence from the police locker in exchange for his kidnapped granddaughter; Jerry goes under cover at a mental health facility to solve a murder.

McGarrett and Five-0 take on the mob when a former boss is killed; Junior's friend is on the run after witnessing the murder.

McGarrett joins Junior and his SEAL team on a mission to capture an elusive person who is holding his mentor hostage; Gerard Hirsch and Kamekona help Grover and Tani on a murder case involving art stolen by Nazis during World War II.

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.

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

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

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

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

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

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

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

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

Pride and Rita plan their wedding; the FBI arrests Connor in connection to the bar's firebombing.

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

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

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

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

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

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

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

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

A murdered petty officer -- with a proposal and an engagement ring -- is found in a Mardi Gras float storage facility; the members of the team are baffled when they cannot locate the victim's girlfriend.

The team reopens a cold case when a stolen Navy-issue gun turns out to belong to a chief petty officer who died 40 years ago; the team makes their annual Thanksgiving dinner together.

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.

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

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

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

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

Horatio delves into the world of modern treasure-hunting after a victim is found skewered to his yacht with a harpoon.

The team finds a rape victim clinging to life after being beaten, and Horatio suspects an imprisoned rapist is somehow responsible for the attack.

The team responds after a gifted 14-year-old tennis player is kidnapped from her bedroom in the middle of the night.

A masked gunman opens fire at a bar, leaving its two owners dead and a third man wounded. Jay Mohr and John Heard guest star.

The CSI team investigates when three people are found dead after a hurricane strikes Miami; Calleigh finds a woman shot to death in a house that was recently looted.

Grover is forced to take his family on the run when a dangerous mob boss seeks revenge for a 15-year-old case.

The team investigates the theft of high-tech indestructible suits made for the military; Jerry and his sister try to save a captive elephant.

When a deliberate chemical spill enables six dangerous inmates to escape, the team goes on an intensive manhunt to find them.

The team races to save an abducted college student from a dangerous vigilante; Max, Kamekona and Flippa struggle to survive after being shipwrecked.

The Five-0 team learns that one of its own has a deep connection to the young daughter of a woman who was murdered in her home.

Five-0 tries to protect a wounded Gabriel and plan an escape when enemy gunmen storm the dilapidated building in which Gabriel is trapped.

McGarrett and Danny pose as drug pilots in a plan to stop a meth epidemic on the island; Danny is forced to break cover and land the plane when McGarrett is seriously wounded.

The team hunts for a murderer who has been targeting serial killers, marking their corpses with an ivory chess piece.

A rogue MI-6 agent is the key to finding a terrorist who plans to cause the meltdown of nuclear reactors across Europe; McGarrett and Danny need the help of an FBI profiler to find a killer.

After finding a corpse in her bed, FBI profiler Alicia Brown joins McGarrett in a hunt for a killer; Kono reconnects with a former surfing competitor.

When the serial killer that Alicia and McGarrett have been hunting kidnaps them, it's up to Five-0 to find them before it's too late.

A cache of guns is stolen by a person looking to make a statement on gun violence; Kono and Adam are reunited.

On Halloween, the team investigates the murder of a medium who was apparently frightened to death by a poltergeist; a mysterious death cult kidnaps Kono and Adam.

Catherine informs Five-0 that McGarrett's mother has been captured and is in danger of being executed for trying to free Wo Fat's imprisoned father; Chin is unable to delay Sara's adoption.

While Danny chaperones Grace's high school dance, the venue is seized by terrorists, who hold everyone hostage with the intent of abducting a diplomat's son; Danny and Grover discover that Will is Grace's secret boyfriend.

MacGyver hunts a U.S. government mole who is leaking classified information to the organization trying to take down the Phoenix Foundation; Sarah comes back to help with the mission; Mac can't tell which side Nikki is on.

While returning from capturing a war criminal, Mac and Jack's helicopter crashes, allowing the prisoner to escape.

Mac and Jack must track down a corrupt FBI agent who has framed a man for murder; everyone on the team is terrified to get a performance review from the tough new boss.

When Matty's goddaughter and her boyfriend are killed in a San Francisco park, Mac and the team investigate the crime and start to suspect that the 1970s Zodiac Killer has returned.

While Mac and Jack are tracking a dangerous fugitive, a family of bounty hunters kidnap him; Bozer and Riley try to hack into Jack's CIA file.

When Mac and the team are blamed for a terrorist bombing, the Phoenix Foundation is forced to disavow them; the team must clear their names without support from back home.

After an earthquake in Hawaii, Mac and the team join Chin and Kono from the Five-0 task force to rescue a group of government scientists trapped in a building; another group tries to steal top-secret weaponry from the scientists.

Mac's close friend from M.I.T. fakes her own death to prevent someone from killing her to suppress her scientific research.

The team searches for a commonality when a series of target abductions take place; Savannah is frustrated with Morgan's traveling.

When people are killed by arsenic poisoning and handwritten death threats are found, the team pursues a suspect fascinated by Greek mythology; Hotch is worried about participating in a Career Day at Jack's school.

When prostitutes are murdered in Texas, their deaths seem to have religious overtones; members of the team are put at risk throughout the course of the investigation.

The investigation in Texas reveals a deep web of corruption; Garcia must save a friend.

The team investigates a series of murders with unidentifiable victims in Bakersfield, Calif.; agent Kate Callahan joins the team.

The team members search for a vengeful suspect who was once abused; Garcia travels to Texas to confront the person she shot.

The BAU team goes to Colorado to investigate when a passenger jet crashes; the incident reminds Kate of a family tragedy.

A body is found covered in scratches, leading the BAU to believe that the person responsible has a chronic skin disorder.

A child reappears one year after he went missing -- but the team must work quickly when a trick-or-treater disappears under similar circumstances.

The team has a difficult time finding a common denominator among several male victims in Montana; J.J. struggles with feelings about her sister's death.

The team believes a suspect is taking on the persona of an Internet urban legend when people with substantial social media followings are found dead; Savannah and Morgan try to find time for each other.

As the team investigates the disappearance of a prominent Boston attorney, secrets of the man's past are revealed.

The BAU tracks a conflicted killer in Virginia who feels remorseful after committing crimes; Rossi receives a visitor.

When the BAU heads to Salt Lake City to look into a triple homicide, their investigation may lead to a fugitive.

The investigation into frozen bodies found floating in a body of water in Nevada leads the team to believe the victims were members of a cult; J.J. confronts her trauma over her abduction.

The team searches for a killer who calls the authorities before committing his crimes; as Rossi prepares for a visit with his daughter, he gets news about the death of an old friend.

A gas man is engulfed in invisible flames and dies during a qualifying race at the Grand Prix Americas.

Horatio must find his brother's killer and protect a niece he never knew existed; the team explores voyeuristic Internet sites in connection with a stockbroker's murder.

A woman found eaten by a shark turns out to have been bait for a private investigator hired by wives to catch their unfaithful husbands.

Horatio investigates the murder of a thrill seeker who was abducted during the course of an extreme kind of role-playing game.

Horatio investigates the apparent suicide of an anesthesiologist and finds a link to a patient who died during routine plastic surgery.

A mentally impaired man is the only witness to the murder of a diamond broker gunned down in a parking garage; a body disappears on the way to the medical examiner's laboratory.

Horatio suspects revenge is behind the murder of a man who tortured Cuban refugees.

A controlled fire in the Everglades reveals the body of a slain hunter, then a wall of fire overtakes Alexx and Delko at the crime scene, forcing them to take refuge under a tarpaulin.

Horatio infers that a slain photographer accidentally witnessed a murder while snapping pictures of a famous actor.

A former surf champion is murdered in his home, while his wife and son are left beaten and bound.

Robbers steal $2.3 million from an armored truck in downtown Miami, but the loot turns out to be counterfeit, and the team must figure out what happened to the bank's money before it was replaced with fake bills.

The detectives' case hinges on the testimony of a forensic-evidence collector who stole a latex glove from the crime scene; co-workers become prime suspects in a waitress's death.

When the team investigates the death of a dancer who was about to audition for a dance competition show, Booth and Brennan go undercover as contestants.

The team investigates the death of an archaeologist who had just made an important discovery.

When Angela and Hodgins wake to find a corpse in their bedroom, they believe Pelant is behind it; against Booth's wishes, Angela and Hodgins start their own investigation.

The team investigates when two bodies are found at the same burial plot; Brennan and Booth discuss after-death arrangements; Daisy returns for the first time since the breakup.

When a female roller derby skater is killed and dismembered, Angie goes undercover to help solve the case; Cam tries to learn more about Booth's secretive hospital appointments.

While in the hospital after being shot at the lab, Brennan struggles with visions of her mother that defy her usual logic; evidence may link Brennan's attacker to the Jeffersonian.

As the team investigates the death of a seemingly innocent 15-year-old boy, they learn that he was involved in illegal activity.

When a well-educated but eccentric intern starts working at the Jeffersonian, Brennan tries to be more open-minded about scientific questions.

The team investigates the death of a young man whose remains were found at a hazardous waste disposal facility; Cam and Arastoo struggle to keep their relationship secret; Brennan and Booth try to decide where to take their vacation.

The investigation into the death of a former Marine leads the team to a group obsessed with preparing for the apocalypse; Sweets finds an apartment.

The team investigates when an undercover cop turns up dead with a bag of diamonds inside his body; Brennan struggles to be likable as the subject of a documentary film.

The team investigates when a TV producer is murdered; Christine is accused of biting a classmate; Hodgins uses his tools at the Jeffersonian to chemically re-create Finn's hot sauce.

When a patient dies after a hit-and-run accident, Toby discovers that the man was convicted of embezzling millions of dollars.

Toby helps a woman regain her memory and draws the attention of the Integrated Investigative Bureau.

McCluskey recruits Toby on a case involving smuggled weapons.

Toby investigates an assassination threat against a Conservative leadership frontrunner.

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

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

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

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

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

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

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

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

The 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."