A mentally challenged man is reunited with his mother, who gave him away after his brother was killed.

A young woman (guest star Jena Malone) escapes from a polygamous cult.

A crane collapse kills a man, and it may not have been an accident; a rift forms between Jack McCoy and Michael Cutter.

A revered sheriff becomes a possible conspirator in a case involving a murdered tourist.

Detectives Lupo and Bernard investigate when the writer of a best-selling memoir is found dead in a community of male prostitutes.

Cutter is determined to expose misconduct when he realizes an old friend working in the system is obstructing justice in the murder of an environmentalist.

While investigating the murder of two divorce lawyers, detectives Lupo and Bernard uncover a child slave-trade ring.

Pharmacist Stooges invent a youth serum.

The murder of the plaintiff in a high-profile lawsuit against a major airline leads detectives to a defense attorney (Dallas Roberts) who is willing to do whatever it takes to ensure his big payday.

When the son and housekeeper of a pair of prominent biologists are murdered, detectives suspect the couple's work on a controversial pharmaceutical study may have made them targets for the killer.

The owner of a trucking company, Vic Russell, is found dead after a business meeting; detectives uncover information that leads them to believe that Russell had ties to the Russian mob.

An NYPD officer kills a troubled fellow officer who took hostages at gunpoint; detectives Lupo and Bernard find valuable stolen documents and a dead body at the man's apartment.

An unconscious war widow and her lifeless infant are found in the rubble of a bombed Army recruitment center; DA Jack McCoy must make one of the most-unpopular decisions of his career.

Mysterious e-mails from a religious Web site lead detectives to the dead body of one of the page's creators; Jack McCoy's political opponent uses the media to attack his reputation.

Members of Earth's space fleet (Casper Van Dien, Dina Meyer, Denise Richards) battle a vicious army of gigantic insects bent on destroying humanity.

Crewmembers (Tom Skerritt, Sigourney Weaver) aboard an interstellar freighter encounter a merciless monster that crawls around their ship's dark corridors and service ducts as it kills them one by one.

A team of scientists on an expedition finds themselves caught up in the cataclysmic battle between aliens and predators - and no matter which species wins, the humans lose.

The Earth is about to be destroyed by a huge ball of fire racing toward the planet. Cornelius, an old monk, knows how to stop the burning sphere with the help of Korben Dallas, a taxi driver and former secret agent and a woman named Leeloo.

After several families are murdered, the team must seek advice from one of the most-horrific killers it has encountered.

The team races to help Hotchner find the Reaper and save his family.

When Hotchner takes a leave of absence from the BAU, the team must regroup to solve a home invasion.

The BAU must profile a criminal in order to catch him after he escapes from custody and begins a killing spree.

The team profiles a suspect who abducts women to fulfill a personal obsession; Hotch has a hard time returning to work.

The team investigates a series of teen suicides in a small Wyoming town.

The team follows a con artist whose crimes escalate as his mental health declines.

Agents Gibbs and DiNozzo board Air Force One to investigate what seems to be a death by natural causes.

Gibbs and his agents investigate when a Marine crashes into a parked car after his parachute fails to open during a training exercise.

The team investigates when a Navy commander's body washes ashore along with the bodies of two drug traffickers.

The team probes the death of a sailor found clutching an officer's sword and discovers he was obsessed with a role-playing game.

A lieutenant's mummified remains turn up nearly 10 years after he was reported missing along with $1 million from his ship's safe.

Gibbs and his team board an aircraft carrier to find out how a sailor with no history of drug abuse overdosed on methamphetamines.

A chief deputy (Tommy Lee Jones) and his team pursue an escaped fugitive (Wesley Snipes) accused of killing two government agents.

An FBI agent (Keanu Reeves) turns California surfer to nab bank robbers who wear rubber masks of four ex-presidents.

A U.S. marshal hunts a doctor on the run who was wrongfully accused and convicted of murdering his wife.

A chief deputy (Tommy Lee Jones) and his team pursue an escaped fugitive (Wesley Snipes) accused of killing two government agents.

A U.S. marshal hunts a doctor on the run who was wrongfully accused and convicted of murdering his wife.

An FBI agent (Keanu Reeves) turns California surfer to nab bank robbers who wear rubber masks of four ex-presidents.

The boys unwittingly re-enlist under their old sergeant.

A U.S. marshal hunts a doctor on the run who was wrongfully accused and convicted of murdering his wife.

When the founder of an organic supermarket chain is found dead, Brennan and Booth suspect foul play by a rival farmer; the two agents visit a new psychiatrist, who warns that the FBI may separate them.

When mummified remains are found at Halloween attractions, Brennan and Booth realize that they must find the killer by Halloween or there will be another death.

The team suspects colleagues when the remains of a young Jeffersonian intern are found in the building's incinerator; Booth poses as Cam's boyfriend and accompanies her on a family get-together.

An FBI agent (Keanu Reeves) turns California surfer to nab bank robbers who wear rubber masks of four ex-presidents.

When high-school classmates reunite to unearth a time capsule buried 20 years earlier, they find the corpse of an adolescent friend inside; while combing through the victim's life, the team members rehash their own teen years.

After construction workers find an archbishop's body with the kneecaps surgically removed, the team returns to the case of the Widow's Son serial killer.

Three days before Christmas the body of a bearded man in a tailor-made Santa outfit turns up in a sewer; Brennan visits her father in prison and plots a nontraditional holiday reunion.

The boys unwittingly re-enlist under their old sergeant.

When the remains of a professional motorcycle racer are found in a hot spring, the team suspects his rival to be the murderer; Dr. Lance Sweets forces Booth and Brennan to accompany him on a double date.

Brennan and Booth investigate the college-basketball world to determine who is responsible for the murder of a player on a nationally ranked team.

After a woman's car is run off the road, only her baby survives; Booth and Brennan go to the woman's hometown to investigate.

When Max (Ryan O'Neal) goes on trial for the murder of FBI Deputy Director Robert Kirby, all the team members but Brennan are called as expert witnesses for the prosecution.

An aspiring singer (Ace Young) is murdered and, as Brennan and Booth investigate the musician's fans and foes, one obsessed woman transfers her affections to Booth.

A human jawbone found at the Jeffersonian alerts Brennan and the team that the Gormogon serial killer has struck again; a lab explosion lands Zack in the hospital; Gormogon's silver skeleton disappears from the vault.

When Brennan and Booth go to London to guest-lecture at Oxford and Scotland Yard, local officials ask them to help investigate the murder of a young heiress; Angela's long-estranged husband returns.

When Brennan and Booth go to London to guest-lecture at Oxford and Scotland Yard, local officials ask them to help investigate the murder of a young heiress; Angela's long-estranged husband returns.

When the corpse of the host of a popular reality show is found partially decomposed in an outhouse, Brennan and Booth must separate the killer from many suspects; Booth discovers that Brennan juggles two relationships.

When Booth's son, Parker, finds a finger in a bird's nest, the team launches an investigation to find the rest of the body; Booth asks Sweets to psychoanalyze his son; Sweets confronts Hodgins about his attitude in the lab.

A teen discovers a dismembered, headless body in a pool of purple water; the team struggles to find enough evidence to locate a killer until getting insight from Zack, who studies the case at his psychiatric facility.

Booth and Brennan investigate when the remains of a disliked office manager are found in a building elevator shaft; Angela and Hodgins try to figure out their altered relationship.

When the founder of an organic supermarket chain is found dead, Brennan and Booth suspect foul play by a rival farmer; the two agents visit a new psychiatrist, who warns that the FBI may separate them.

When mummified remains are found at Halloween attractions, Brennan and Booth realize that they must find the killer by Halloween or there will be another death.

The team suspects colleagues when the remains of a young Jeffersonian intern are found in the building's incinerator; Booth poses as Cam's boyfriend and accompanies her on a family get-together.

When high-school classmates reunite to unearth a time capsule buried 20 years earlier, they find the corpse of an adolescent friend inside; while combing through the victim's life, the team members rehash their own teen years.

After construction workers find an archbishop's body with the kneecaps surgically removed, the team returns to the case of the Widow's Son serial killer.

Three days before Christmas the body of a bearded man in a tailor-made Santa outfit turns up in a sewer; Brennan visits her father in prison and plots a nontraditional holiday reunion.

The leader of a great Painted Wolf family is growing old and her power to keep the peace is waning; a feud with an ambitious daughter threatens to bring the dynasty down.

The leader of a once mighty lion pride must now battle for their very survival; a look at whether or not this extraordinary lioness can save her family from disaster.

A colony of emperor penguins arrive in Atka Bay, after three months at sea, to raise their chicks through the coming winter.

A group of chimps in Senegal is led by an alpha male named Dave.

Tigress Raj Bhera has four new cubs whom she must protect while battling rivals who want to steal her lands and overthrow her.

Grasslands cover one quarter of all land and support the greatest gatherings of wildlife on Earth, but hostile seasons pose a survival risk.

The secretive lives of mountain animals; snow leopards come together to help a mother and cub, trapped between rival males.

From the jungles of Brazil to Costa Rica, animals face life in the most competitive place on Earth.

The hostile conditions of Earth's desert regions give rise to the most incredible survival stories on Earth.

Remote islands offer sanctuary; pygmy three-toed sloth resides on a Caribbean island; nesting albatross thrive in isolation.

Cities serve as places of surprising opportunity for animals to thrive.

Presented with behind the scenes content; explore northern Asia.

Presented with behind the scenes content; explore Asia's jungles.

A freewheeling Detroit cop pursuing a murder investigation finds himself dealing with the very different culture of Beverly Hills.

The hard-nosed Detroit cop returns to Los Angeles to help solve another case. This time he must direct his efforts towards unraveling the Alphabet Crimes, a series of robberies committed by leather-jacketed punks.

Presented with behind the scenes content; explore northern Asia.

Presented with behind the scenes content; explore Asia's jungles.

Borneo is the richest rainforest island of all; home to 40,000 species of plants and animals, 6,000 of them are unique, and more are discovered almost daily.

The connections between humans and insects.

Journey from the lava ramparts to its fiery heart, discovering how this place became one of the most important areas of biodiversity in the world.

From the jungles of Brazil to Costa Rica, animals face life in the most competitive place on Earth.

Remote islands offer sanctuary; pygmy three-toed sloth resides on a Caribbean island; nesting albatross thrive in isolation.

Cities serve as places of surprising opportunity for animals to thrive.

Presented with behind the scenes content; explore northern Asia.

Presented with behind the scenes content; explore Asia's jungles.

Two goofy garbagemen (Charlie Sheen, Emilio Estevez) find a politician's corpse in a can, and a toxic-waste scheme behind it.

A freewheeling Detroit cop pursuing a murder investigation finds himself dealing with the very different culture of Beverly Hills.

The hard-nosed Detroit cop returns to Los Angeles to help solve another case. This time he must direct his efforts towards unraveling the Alphabet Crimes, a series of robberies committed by leather-jacketed punks.

Sporting billionaire brothers reverse the roles of a Wall Street commodities broker (Dan Aykroyd) and a street hustler (Eddie Murphy).

Pampered Prince Akeem (Eddie Murphy) of Zamunda comes to New York with his royal sidekick (Arsenio Hall) to find a true-love bride.

As detectives investigate the death of a bank executive's mistress, they uncover a kidnapping and extortion plot.

The search for a writer's killer leads detectives to a closed espionage case.

While investigating the murder of a TV reporter, detectives learn that she was involved in a love triangle.

Detective Bernard and Lupo's investigation into a series of hate crimes against Hispanic men leads to controversy.

Detectives Lupo and Bernard have trouble finding a motive when a firefighter and his wife are found tortured and murdered in their new home.

The Stooges are running the local drugstore, mixing up a potion that a desperate businessman decides to sell as scotch.

The double murder of two young scientists leads detectives to a jealous, mentally disturbed woman.

Detectives Lupo and Bernard investigate three murders that appear to be the work of a serial killer.

The murder of a well-known charity executive leads detectives down a path of political intrigue.

When a young war veteran is found dead, Detectives Lupo and Bernard connect the murder to an attorney who used to work for the Department of Justice.

Detectives find that DNA evidence seems to link the murder of a CSU investigator and an attack on a young journalist (Camille Chen).

A pilot (Robert Hays) afraid to fly follows his stewardess ex-girlfriend (Julie Hagerty) and must take over for the poisoned crew.

The first commercial space shuttle sends loony Ted (Robert Hays) and his former girlfriend (Julie Hagerty) on a trip to the moon.

Sporting billionaire brothers reverse the roles of a Wall Street commodities broker (Dan Aykroyd) and a street hustler (Eddie Murphy).

Pampered Prince Akeem (Eddie Murphy) of Zamunda comes to New York with his royal sidekick (Arsenio Hall) to find a true-love bride.

A cool teen (Matthew Broderick) plays hooky in Chicago with his girlfriend (Mia Sara), his buddy (Alan Ruck) and the classic Ferrari of his buddy's father.

While searching for the murderer of the adoptive mother of 10 disabled children, detectives uncover a reality-show offer and an affair.

When a doctor is murdered, the detectives investigate an abortion protester; Van Buren receives more bad news; Connie faces a moral dilemma.

The revelation of a murder victim's true identity leads detectives to a suspicious web site with threatening posts.

When a wealthy young woman is found dead in her apartment, a few signs lead detectives to believe the killer was not after her wealth; a security video exposes two potential suspects, leading the detectives to a drug cartel.

A suspicious nasal spray is found at the site of a deadly car crash; after the medical examiner realizes the spray could easily disorient its user, the detectives become suspicious of the victim's boss.

When a key witness in a murder trial is found dead in her hotel, detectives get involved in a spiraling case that unravels into an intricate conspiracy.