An unknown force is destroys starships and threatens galactic peace; the U.S.S. Cerritos crew isn't important enough for things like that.

SG-1 encounters mutants in an off-world laboratory.

Russian and American officials must tell the British, Chinese and French about the Stargate program after a Goa'uld mothership crashes into the Pacific.

An encounter with the survivors of a crashed spaceship turns into a deadly game of deception.

Detective Slaughter (Adam Baldwin) asks Castle for help solving a high-stakes robbery case; a corpse connected to the case makes Slaughter look guilty.

The brutal murder of a lothario prompts an investigation into New York's elite; Castle plans a surprise for Beckett in honor of their first wedding anniversary.

An experimental procedure may free Teal'c of the need for a symbiote.

Russian and American officials must tell the British, Chinese and French about the Stargate program after a Goa'uld mothership crashes into the Pacific.

An encounter with the survivors of a crashed spaceship turns into a deadly game of deception.

SG-1 encounters mutants in an off-world laboratory.

Russian and American officials must tell the British, Chinese and French about the Stargate program after a Goa'uld mothership crashes into the Pacific.

Top Killjoys are pitted against each other in a race to find a rogue Killjoy; Khlyen uses Dutch, forcing John and D'avin to team up with a nemesis.

Detective Slaughter (Adam Baldwin) asks Castle for help solving a high-stakes robbery case; a corpse connected to the case makes Slaughter look guilty.

Capt. Kirk faces an agonizing choice when he and Spock follow McCoy to 1930s New York to restore history's altered course. A Hugo Award winner.

Mind-controlling organisms infesting a colony world attack Kirk's brother and his family, then turn on Spock.

Spock must take a bride (Arlene Martel) on his home world or die when the Vulcan mating cycle overwhelms him.

A being, claiming to be the Greek god Apollo, wants the adoration of the Enterprise crew; guest Leslie Parrish.

Navajo Tribal Policeman Joe Leaphorn investigates the death of a man involved in a mysterious cult, while Jim Chee, moonlighting as a PI, works a case of his own; when their investigations collide, Leaphorn and Chee find themselves in grave danger.

The librarians are forced to intercede when a group of competitive high school students start undercutting each other with witchcraft.

The librarians encounter the house behind the legend of all haunted houses and set out to destroy it.

The space probe Nomad, its programming altered in an encounter with an alien device, mistakes Kirk for its creator.

Kirk, Scott, McCoy and Uhura accidentally switch places with their malevolent counterparts from a parallel universe.

Navajo Tribal Policeman Joe Leaphorn investigates the death of a man involved in a mysterious cult, while Jim Chee, moonlighting as a PI, works a case of his own; when their investigations collide, Leaphorn and Chee find themselves in grave danger.

The librarians are forced to intercede when a group of competitive high school students start undercutting each other with witchcraft.

The librarians encounter the house behind the legend of all haunted houses and set out to destroy it.

The crew of X-303 is stranded in deep space after a test of the Naquadriah hyperdrive fails.

Jonas starts predicting the future, complicating the SG-1 team's efforts to thwart the ambitions of a scheming underlord.

The SG-1 team races to prevent Anubis from capturing a powerful necklace.

Castle and Beckett find themselves trapped at sea with a killer when they investigate the murder of a cruise ship entertainer.

When a corpse is discovered in the theater of Martha's latest show, Castle and Beckett's investigation reveals surprising details about the world of competitive a capella.

The SG-1 team tries to help Daniel rediscover his identity and foil Anubis' bid for galactic domination.

Jonas starts predicting the future, complicating the SG-1 team's efforts to thwart the ambitions of a scheming underlord.

The SG-1 team races to prevent Anubis from capturing a powerful necklace.

The crew of X-303 is stranded in deep space after a test of the Naquadriah hyperdrive fails.

Jonas starts predicting the future, complicating the SG-1 team's efforts to thwart the ambitions of a scheming underlord.

The quest to uncover the mystery behind D'avin's missing memories leads the Killjoys to a black market.

Castle and Beckett find themselves trapped at sea with a killer when they investigate the murder of a cruise ship entertainer.

La Forge must help a shy lieutenant integrate into his engineering team when he discovers the man shirking his responsibilities and retreating into the holodeck to live out his fantasies.

A shuttle explosion leads the crew to believe Data has been killed, not realizing an alien collector staged the incident to hold Data hostage as his newest curiosity.

Vulcan ambassador Sarek becomes temperamental while on the Enterprise with his wife; Picard must mind-meld with the venerable Vulcan to soothe his emotional outbursts.

After Lwaxana spurns a DaiMon's affections, the Ferengi kidnap Riker and the Trois from Betazed; Picard must act the part of Lwaxana's scorned lover to secure their freedom.

The Enterprise crew saves a badly injured humanoid who possesses remarkable powers, but danger follows behind him.

An investigation into a missing person uncovers what appears to be an alien invasion in a small town.

When Dulaque changes the course of fate, Baird begins moving through alternate timelines that reveal the changing destinies of the librarians.

Riker must make an agonizing choice between saving Picard or humanity when the Borg plan to use the abducted captain in their scheme to assimilate Earth.

Riker must make an agonizing choice between saving Picard or humanity when the Borg plan to use the abducted captain in their scheme to assimilate Earth.

On Earth, Worf reunites with his adopted parents; Picard, with his brother; and Wesley, with his father.

An investigation into a missing person uncovers what appears to be an alien invasion in a small town.

When Dulaque changes the course of fate, Baird begins moving through alternate timelines that reveal the changing destinies of the librarians.

Anubis lays siege to Jonas' home planet, Kelowna, threatening to tear it apart and enslave its people.

O'Neill regresses several decades and becomes his teenage self.

Teal'c is powerless to save his son from enslavement in a death camp.

When Castle takes the stand as the key witness to a murder, new information suddenly arises, forcing Beckett to race to prevent a miscarriage of justice.

The son of a Russian diplomat is murdered; during the investigation, Castle entertains a jovial Russian security guard, who turns out to be more involved in the case than expected.

SG-1 discovers an oasis of life in a force-field dome on a desolate planet.

O'Neill regresses several decades and becomes his teenage self.

Teal'c is powerless to save his son from enslavement in a death camp.

Anubis lays siege to Jonas' home planet, Kelowna, threatening to tear it apart and enslave its people.

O'Neill regresses several decades and becomes his teenage self.

A toxic rain storm forces John and Pawter to take shelter with criminals; Dutch and D'avin are trapped on Lucy.

When Castle takes the stand as the key witness to a murder, new information suddenly arises, forcing Beckett to race to prevent a miscarriage of justice.

A homing device draws Data to a confrontation with his evil brother, Lore, and their creator, Dr. Noonian Soong.

Picard faces a child-custody dilemma after the Enterprise rescues an orphaned human; Picard's growing attachment to the young man complicates matters.

When Dr. Crusher leaps into another dimension of reality, Enterprise crew members mysteriously disappear.

Tasha Yar's sister stirs up old feelings as she helps the Enterprise rescue Federation members held hostage on her planet.

While Worf deals with a personal dilemma, Picard mediates a power struggle between successors to the Klingon Empire.

Jenkins discovers there is something wrong with the library; the librarians are drawn together to solve the mystery of a massive storm that is parked over Manhattan.

Prospero summons other fictionals in order to retrieve parts of his staff; the librarians find themselves pitted against Frankenstein's monster and Sherlock Holmes' nemesis Moriarty; Flynn and Baird have a disagreement.

After an aborted mission to an uninhabited planet, Riker awakens in the future with no memory of the past 16 years.

Before entering Starfleet Academy, Wesley accompanies Picard on a mission that jeopardizes the captain's life.

Troi loses her empathic sense at the same time the Enterprise encounters a mysterious life form that appears to be heading toward self-destruction.

Jenkins discovers there is something wrong with the library; the librarians are drawn together to solve the mystery of a massive storm that is parked over Manhattan.

Prospero summons other fictionals in order to retrieve parts of his staff; the librarians find themselves pitted against Frankenstein's monster and Sherlock Holmes' nemesis Moriarty; Flynn and Baird have a disagreement.

After a mission to a downed spaceship, Daniel appears to have multiple personalities.

After a member of a science team is killed, O'Neill and the crew investigate the Naquadah planet and discover it is inhabited by Unas, who were once enslaved by the Goa'uld as miners.

Carter pairs with Warrick in a race in which more is at stake than a lucrative contract with a leading technology corporation.

Castle is abducted and forced to solve deranged puzzles and mind games with strangers; Beckett and the 12th precinct race to save Castle.

When a student who takes English as a second language is murdered, Castle goes under cover and learns unexpected information about the victim.

A newly invented viral weapon backfires when Stargate Command uses it against the Goa'uld and Ba'al.

After a member of a science team is killed, O'Neill and the crew investigate the Naquadah planet and discover it is inhabited by Unas, who were once enslaved by the Goa'uld as miners.

Carter pairs with Warrick in a race in which more is at stake than a lucrative contract with a leading technology corporation.

After a mission to a downed spaceship, Daniel appears to have multiple personalities.

After a member of a science team is killed, O'Neill and the crew investigate the Naquadah planet and discover it is inhabited by Unas, who were once enslaved by the Goa'uld as miners.

Dutch and John turn the tables on Khlyen and discover the shocking truth behind his presence; Dutch wonders if she was ever free.

Castle is abducted and forced to solve deranged puzzles and mind games with strangers; Beckett and the 12th precinct race to save Castle.

When the Voyager crew finds Kohl settlers in artificial hibernation, Torres and Kim are sent to investigate.

A bizarre force causes Neelix and Tuvok to become one entity during an away mission; the Doctor looks for a way to separate the newly merged being.

Crippled, cornered, and out of options, Picard stages a gambit to trap Vadic and reveal her true motive, a gamble that puts the Titan in the crosshairs and forces Picard and Beverly to question every moral code they've ever held.

A young group of cadets come together to pursue a common dream; under the watchful and demanding eyes of their instructors, they discover what it takes to become Starfleet officers as they navigate friendships, rivalries, first loves and a new enemy.

Vadic forces Picard to make an impossible choice: deliver what he can never give or watch his crew perish; their only salvation lies in the mind of an old friend and old foe.

A devastating revelation about Jack alters the course of Picard's life forever - and uncovers a truth that threatens every soul in the Federation; the final battle begins as Picard and his crew race to save the galaxy from annihilation.

In a desperate last stand, Jean-Luc Picard and generations of crews, both old and new, fight together to save the galaxy from the greatest threat they've ever faced.

A young group of cadets come together to pursue a common dream; under the watchful and demanding eyes of their instructors, they discover what it takes to become Starfleet officers as they navigate friendships, rivalries, first loves and a new enemy.

Mariner faces her past in the season four finale.

Stone, Cassandra and Ezekiel team up to investigate a cave-in at an oil rig site which has unleashed a shape-shifting god who grows in strength when lies are told.

When students begin disappearing at Wexler College, the librarians head out to investigate; Cassandra gets an offer that is difficult to turn down.

O'Neill and the crew of SG-1 negotiate an alliance between Earth and a planet inhabited by female warriors.

The team encounters an unstoppable new breed of Goa'uld supersoldier impervious to any weapon known to man.

Maj. Carter leads a mission to Anubis' home world; O'Neill heads to Central America to rescue Daniel.

Castle goes to Los Angeles in hopes of finding answers about the time he cannot remember, but ends up in danger when he is recruited by the Greatest Detective Society.

Beckett and the team return to the NYPD academy training ground to investigate the murder of a recruit officer; Castle struggles with a consequential decision for him and Beckett.

Maj. Carter wakes to find the crew missing after the Prometheus encounters an alien attack.

The team encounters an unstoppable new breed of Goa'uld supersoldier impervious to any weapon known to man.

Maj. Carter leads a mission to Anubis' home world; O'Neill heads to Central America to rescue Daniel.

O'Neill and the crew of SG-1 negotiate an alliance between Earth and a planet inhabited by female warriors.

The team encounters an unstoppable new breed of Goa'uld supersoldier impervious to any weapon known to man.

Tensions boil over when the Company arrests a friend; peace in the Quad hangs in the balance, forcing the Killjoys to choose a side.

Castle goes to Los Angeles in hopes of finding answers about the time he cannot remember, but ends up in danger when he is recruited by the Greatest Detective Society.

Janeway surrenders the ship after the Voyager crew loses a battle with the Kazon; only Tom Paris, Lon Suder, and The Doctor are left to retake the ship. guest Brad Dourif.

Asta and D'arcy take a drastic step in an attempt to get Harry back on track.

Harry hits rock bottom; Kate begins seeing the truth; Mike helps Liv face her greatest fear.

Harry and Asta get surprise visits; Ben grows suspicious of Mike and Liv's private investigation.

Harry and Asta team up with an unlikely ally to try to save the Earth.

Asta and D'arcy take a drastic step in an attempt to get Harry back on track.

Harry hits rock bottom; Kate begins seeing the truth; Mike helps Liv face her greatest fear.

Harry and Asta get surprise visits; Ben grows suspicious of Mike and Liv's private investigation.

Harry and Asta team up with an unlikely ally to try to save the Earth.

Asta and D'arcy take a drastic step in an attempt to get Harry back on track.

Harry hits rock bottom; Kate begins seeing the truth; Mike helps Liv face her greatest fear.

Harry and Asta get surprise visits; Ben grows suspicious of Mike and Liv's private investigation.

With D'av's newborn son's life on the line, the trio take desperate measures to save him.

Dutch trains Jaq to fight an unstoppable enemy as Pree and Fancy look for the missing Gared.

With D'av and Jaq on the run, Dutch and John hunt the answer to Khlyen's memory clue.

An awkward Jaqobis homecoming takes a deadly turn as Dutch and Zeph risk everything for science.

Approximately three months after the events of Season 1, the U.S.S. Cerritos is dispatched on a mission which results in an encounter with "strange energy.".

A private investigator of the mind navigates the darkly alluring world of the past by helping his clients access lost memories. His life is forever changed as he uncovers a violent conspiracy while trying to solve the mystery behind a missing client.

Wonder Woman musters all of her strength, wisdom and courage as she finds herself squaring off against Maxwell Lord and the Cheetah, a villainess who possesses superhuman strength and agility.

Harley Quinn faces the wrath of narcissistic crime boss Black Mask and every other thug in Gotham. But things soon even out for Harley when she becomes unexpected allies with three deadly women -- Huntress, Black Canary and Renee Montoya.

Natasha Romanoff, aka Black Widow, confronts the darker parts of her ledger when a dangerous conspiracy with ties to her past arises.

With the Berlin Wall about to fall, an elite MI6 spy travels into the heart of the city to retrieve a priceless dossier and take down a ruthless espionage ring.

An unwilling drug mule (Scarlett Johansson) develops superhuman abilities after the synthetic substance leaks into her system.

When a mentor from Dal's past persuades him to use their Federation cover for personal gain, they quickly discover Starfleet has protocols for a reason.

With the Berlin Wall about to fall, an elite MI6 spy travels into the heart of the city to retrieve a priceless dossier and take down a ruthless espionage ring.

When the U.S.S. Protostar is fractured in time by an anomaly, Hologram Janeway must synchronize the disjointed crew and save their ship before it destructs.

With a dog named Lulu by his side, Army Ranger Briggs races down the Pacific Coast to make it to a soldier's funeral on time. Along the way, Briggs and Lulu drive each other completely crazy, break a handful of laws and narrowly evade death.

American submarine Capt. Joe Glass learns that a secret Russian coup is in the offing. With crew and country on the line, Glass must assemble an elite group of Navy SEALs to sneak through enemy waters and rescue the kidnapped Russian president.

Members (Jeremy Renner, Anthony Mackie, Brian Geraghty) of a bomb-disposal unit in Baghdad face increasingly perilous situations as their tour-of-duty winds down.

With a dog named Lulu by his side, Army Ranger Briggs races down the Pacific Coast to make it to a soldier's funeral on time. Along the way, Briggs and Lulu drive each other completely crazy, break a handful of laws and narrowly evade death.

American submarine Capt. Joe Glass learns that a secret Russian coup is in the offing. With crew and country on the line, Glass must assemble an elite group of Navy SEALs to sneak through enemy waters and rescue the kidnapped Russian president.

Members (Jeremy Renner, Anthony Mackie, Brian Geraghty) of a bomb-disposal unit in Baghdad face increasingly perilous situations as their tour-of-duty winds down.

Disgraced Secret Service agent Mike Banning finds himself trapped inside the White House in the wake of a terrorist attack and works with national security to rescue the President from his kidnappers.

In London for the Prime Minister's funeral, Mike Banning is caught up in a plot to assassinate all the attending world leaders.

Wrongfully accused of trying to kill the president, framed Secret Service agent Mike Banning must evade the FBI and his own agency to uncover the truth and save the country from imminent danger.

Living alone in the Oregon wilderness, a truffle hunter returns to Portland to find the person who stole his beloved pig.

With his home world facing a natural disaster, Jonas Quinn must tunnel below the planet's surface to prevent a massive explosion of raw energy.

Carter's new relationship is in jeopardy when he begins to investigate her secret life; Osiris manipulates Daniel's dreams.

After Anubis destroys the alpha site, Carter must run from an unstoppable foe; the alliance between the Tok'ra and the rebel Jaffa begins to fracture.

Investigation into the death of an armored-car driver leads Beckett and Castle to one of Esposito's old cases.

Castle and Beckett search for a stolen antique that may have been Aladdin's lamp in the hope it will lead them to a smuggler's murderer.

The president sends a small crew to film standard operational procedures at the Stargate Command base.

Carter's new relationship is in jeopardy when he begins to investigate her secret life; Osiris manipulates Daniel's dreams.

After Anubis destroys the alpha site, Carter must run from an unstoppable foe; the alliance between the Tok'ra and the rebel Jaffa begins to fracture.

With his home world facing a natural disaster, Jonas Quinn must tunnel below the planet's surface to prevent a massive explosion of raw energy.

Carter's new relationship is in jeopardy when he begins to investigate her secret life; Osiris manipulates Daniel's dreams.

After failing to rescue D'avin, Dutch and Johnny head to Eulogy in the hopes of stealing a mysterious, high-tech shield.

Investigation into the death of an armored-car driver leads Beckett and Castle to one of Esposito's old cases.

The Enterprise officers investigate a primitive society that seems to exist to serve a godlike machine; guest David Soul.

Only the Enterprise and the battered Constellation stand between an ancient weapon and devastation; guest William Windom.

A beautiful sorceress (Antoinette Bower) and her accomplice use illusion to hold Kirk and the Enterprise captive.

Kirk encounters old foe Harry Mudd (Roger C. Carmel), now apparently the monarch of a world populated by androids.

Leaphorn explores personal ties to an increasingly mysterious case; Chee is questioned by a reluctant Sgt. Manuelito; the discovery of a body sends Leaphorn and Manuelito in pursuit of a child in danger.

Flynn is kidnapped by a mysterious stranger with both amnesia and a collection of the library's missing artifacts; the group pursues the Staff of Zara-thustra.

Baird's old friend finds himself embroiled in a scandal in the form of a missing intern and a contract with the devil; Baird must battle for the souls of all the librarians.

The shuttlecraft Galileo makes a forced landing on a world with a single human inhabitant (Glenn Corbett); guest Elinor Donahue.

Spock's father (Mark Lenard) faces charges of killing a fellow ambassador during an Enterprise voyage; guest Jane Wyatt.

Leaphorn explores personal ties to an increasingly mysterious case; Chee is questioned by a reluctant Sgt. Manuelito; the discovery of a body sends Leaphorn and Manuelito in pursuit of a child in danger.

Flynn is kidnapped by a mysterious stranger with both amnesia and a collection of the library's missing artifacts; the group pursues the Staff of Zara-thustra.

Baird's old friend finds himself embroiled in a scandal in the form of a missing intern and a contract with the devil; Baird must battle for the souls of all the librarians.

While Bregman hounds the SG-1 crew for video footage, a key member of the SGC is killed in action.

Daniel discovers a human-Goa'uld hybrid and tries to gain her trust.

Newly inaugurated Vice President Kinsey asks the president to put the Stargate program under his command.

When Hayley finds herself being implicated in a cyber-terror attack after doing an old friend a favor, Castle and Beckett rush to clear her name.

After a meek city safety inspector survives being poisoned, he tries to help Castle and Beckett with the investigation.

When knowledge of the Ancients is downloaded into O'Neill's brain, he possesses the power to save Earth from Anubis.

Daniel discovers a human-Goa'uld hybrid and tries to gain her trust.

Newly inaugurated Vice President Kinsey asks the president to put the Stargate program under his command.

While Bregman hounds the SG-1 crew for video footage, a key member of the SGC is killed in action.

Daniel discovers a human-Goa'uld hybrid and tries to gain her trust.

With D'avin back on the team, the Killjoys return to the ruins of Old Town to hunt eight escaped convicts.

When Hayley finds herself being implicated in a cyber-terror attack after doing an old friend a favor, Castle and Beckett rush to clear her name.

A Vulcan ambassador negotiating with the Romulans is beamed aboard; Data prepares for his friend's wedding.

To prevent a war, Picard must stop a renegade Federation starship that is attacking Cardassian vessels.

Picard tries to save a terrorized planet and the Enterprise from a woman claiming to be the devil who has returned after 1,000 years to claim the planet as she was promised.

After passing through a "wormhole," Picard must retrace the Enterprise's path to discover what is causing Data to lie.

A first-contact mission puts Riker in an alien hospital, leaving Picard to convince the planet's leaders that the Enterprise poses no threat.

When people begin suffering the effects of accidents and sins in which they have not been involved, the team tracks the connection to Dorian Gray.

The team is sent to a high-tech research facility where the researchers have been turned into mindless monsters by a bizarre power source in the center's lab.

After killing an attacking life form, the Enterprise discovers a "baby" within its womb; Geordi meets the object of his admiration, but his overly familiar attitude toward her makes their interactions uncomfortable.

Trapped in a space rift with the crew slowly going insane, only Data and Troi are left to find a way to save the Enterprise.

Geordi begins to exhibit signs of mutating into another life form as a result of a parasite that was picked up during a team mission.

When people begin suffering the effects of accidents and sins in which they have not been involved, the team tracks the connection to Dorian Gray.