Captain Freeman assigns the Lower Deckers an overly safe mission to try and keep a self-destructive Mariner out of danger.

Mariner faces her past in the season four finale.

The team gets tested when Dutch interrogates a lethal Level Six agent, while Johnny investigates Jelco's wall for Pawter.

Khlyen's Red 17 transmission leads Dutch, D'avin and Alvis to a research facility on Arkyn; Johnny and Pawter try to rally support for the impending war for Westerly.

Pawter's plans to free Old Town from Jelco's control get Dutch seized by an angry mob.

Scooby and the gang face their biggest, most challenging mystery ever -- a plot to unleash the ghost dog Cerberus upon the world. As they race to stop the global dog-pocalypse, the gang discovers that Scooby has a secret legacy and an epic destiny.

One of nine living on Earth, an alien (Alex Pettyfer) with extraordinary abilities poses as an ordinary teenager in the hope of evading those sent to kill him.

A soldier fighting aliens gets to relive the same day over and over again, the day restarting every time he dies.

Four people (Ioan Gruffudd, Jessica Alba, Chris Evans) gain unusual powers after a space mission exposes them to cosmic radiation.

A space adventurer (Chris Pratt) becomes the quarry of bounty hunters after he steals an orb coveted by a treacherous villain, but after he discovers the orb's true power, he must find a way to unite four ragtag rivals to save the universe.

The team struggles to keep its newfound family together as it tries to unravel the mystery of Peter Quill's true parentage in the outer reaches of the galaxy.

Five teenage mutants undergo treatments at a secret institution that will cure them of their dangerous powers. As their memories turn into terrifying realities, they soon start to question why they're being held and who's trying to destroy them.

A soldier fighting aliens gets to relive the same day over and over again, the day restarting every time he dies.

Scooby and the gang face their biggest, most challenging mystery ever -- a plot to unleash the ghost dog Cerberus upon the world. As they race to stop the global dog-pocalypse, the gang discovers that Scooby has a secret legacy and an epic destiny.

The team joins forces with an old enemy in a desperate bid to thwart the Level Six plan for The Quad.

Dutch and D'avin are on the hunt for a weapon that will draw out the Hullen; Johnny receives an SOS from Clara.

Dutch and D'avin attempt to train a replacement nerd; John finds his search for Clara is getting under some people's skin.

The Killjoys trace the last coordinates of a Black Root ship to a radiation scorched planet, finding an abandoned Hullen training camp, creepy inhabitants and a surprising connection to their past.

An ambush sends Dutch and Johnny on the run for help; D'avin tries to get to the bottom of a Black Warrant.

On the run in the year 1987, Bumblebee the Autobot finds refuge in a junkyard in a small California beach town. When 17-year-old Charlie revives him, she quickly learns that this is no ordinary yellow Volkswagen.

As a war between humankind and monstrous sea creatures wages on, a former pilot and a trainee are paired up to drive a seemingly obsolete special weapon in an effort to save the world.

M3GAN is a marvel of artificial intelligence, a lifelike doll that's programmed to be a child's best friend. When a brilliant roboticist gives her young niece an M3GAN prototype, it soon becomes violent and does anything to protect the girl.

On the run in the year 1987, Bumblebee the Autobot finds refuge in a junkyard in a small California beach town. When 17-year-old Charlie revives him, she quickly learns that this is no ordinary yellow Volkswagen.

As a war between humankind and monstrous sea creatures wages on, a former pilot and a trainee are paired up to drive a seemingly obsolete special weapon in an effort to save the world.

As a war between humankind and monstrous sea creatures wages on, a former pilot and a trainee are paired up to drive a seemingly obsolete special weapon in an effort to save the world.

M3GAN is a marvel of artificial intelligence, a lifelike doll that's programmed to be a child's best friend. When a brilliant roboticist gives her young niece an M3GAN prototype, it soon becomes violent and does anything to protect the girl.

A woman who has a metal plate in her head embarks on a bizarre journey.

Vala's father attempts to trade intelligence to Stargate Command for sanctuary on Earth.

The SG-1 team creates an elaborate plan to use Vala as bait to capture Adria; Adria is taken captive by Ba'al.

With extinction imminent, the Asgard decide to hand over all of their knowledge and technology to the SG-1 team.

Unable to work alongside Kate or the 12th Precinct, Castle gets his private investigator license and shows up unannounced at a crime scene.

Beckett and the team investigate the death of a young telenovela actress; Castle is hired as a private investigator to look into the murder from another angle.

Col. Jack O'Neill is summoned for a rescue mission to Planet Abydos to find scientist Daniel Jackson and to explore the universe through Stargates.

The SG-1 team creates an elaborate plan to use Vala as bait to capture Adria; Adria is taken captive by Ba'al.

With extinction imminent, the Asgard decide to hand over all of their knowledge and technology to the SG-1 team.

Vala's father attempts to trade intelligence to Stargate Command for sanctuary on Earth.

The SG-1 team creates an elaborate plan to use Vala as bait to capture Adria; Adria is taken captive by Ba'al.

Trapped in the mysterious and mind-bending greenspace and on the run from the deadly Lady, Aneela and her father Khlyen struggle to stay one step ahead while keeping a wounded Dutch alive.

Unable to work alongside Kate or the 12th Precinct, Castle gets his private investigator license and shows up unannounced at a crime scene.

A disease that caused the rapid aging and death of a planetary survey team threatens the Enterprise officers.

Capt. Kirk becomes obsessed with destroying a gaseous creature that was responsible for the death of his former captain.

Scott is suspected of several murders on a peaceful world during the shore leave of Enterprise crew members.

Ravenous, furry tribbles, irate officials and hostile Klingons complicate an Enterprise cargo delivery.

The rulers of the world Triskelion kidnap Kirk, Uhura and Chekov and force them to fight in wagered bouts.

Cindy Kroger suddenly becomes popular thanks to a magical love potion; the librarians must stop Cindy before she launches a love missile that would force the entire world to become her fan base.

The librarians are led to a holistic spa that is run by vampires when a rash of people spontaneously combust.

The Enterprise discovers a remote world bearing an unlikely resemblance to 1920s Chicago; guest Vic Tayback.

The disappearance of a Vulcan ship leads a weary Enterprise crew into battle with a huge space organism.

A power struggle between the Federation and the Klingon Empire ensnares a primitive society Kirk once visited.

Cindy Kroger suddenly becomes popular thanks to a magical love potion; the librarians must stop Cindy before she launches a love missile that would force the entire world to become her fan base.

The librarians are led to a holistic spa that is run by vampires when a rash of people spontaneously combust.

Col. Jack O'Neill is summoned for a rescue mission to Planet Abydos to find scientist Daniel Jackson and to explore the universe through Stargates.

A parasitic presence inside the SG-2 leader's head causes him to run amok.

A trade for weapons has a profound impact on the lives of the inhabitants of planet Simarka.

A woman hires Castle to see if her husband is cheating on her -- but things take a shocking turn when Castle witnesses the murder of his client.

Castle is asked to consult on a case when evidence in a young woman's murder implicates Dr. Kelly Neiman (Annie Wersching) -- Castle and Beckett's nemesis.

A virus on another world turns intelligent people into primitive beings.

A parasitic presence inside the SG-2 leader's head causes him to run amok.

A trade for weapons has a profound impact on the lives of the inhabitants of planet Simarka.

Col. Jack O'Neill is summoned for a rescue mission to Planet Abydos to find scientist Daniel Jackson and to explore the universe through Stargates.

A parasitic presence inside the SG-2 leader's head causes him to run amok.

With criminals chasing an injured Johnny, D'av and Delle Seyah take drastic measures to save him.

A woman hires Castle to see if her husband is cheating on her -- but things take a shocking turn when Castle witnesses the murder of his client.

Adjustments to the subspace sensor array inadvertently establish a link to aliens who begin kidnapping crew members for experiments.

A young honor student serving aboard the Enterprise is torn between remaining a part of the crew or accepting an offer made by Q.

When Picard, Guinan, Ro and Keiko experience trouble aboard their shuttlecraft, they return to the Enterprise as 12-year-old children.

Troi, Worf and Alexander strap on their Wild West six-guns for a holodeck adventure that inexplicably turns into a violent encounter.

Data acts as an advocate for three intelligent "machines," not realizing that his decision may have dire consequences for Picard.

The balance of the universe is put in jeopardy when the Monkey King's sacred homeland of Shangri-La is taken over by a ruthless collector of magical artifacts.

The library is simultaneously infiltrated by DOSA and Apep; Flynn, Baird, Stone, Cassandra, Ezekiel and Jenkins must put aside their differences to save the library, the world and themselves.

Picard, Worf and Dr. Crusher are reassigned to a top-secret mission; a new commanding officer assumes control of the Enterprise.

Picard's captors use extreme methods to uncover Federation strategy; Jellico plans to launch a first strike against the Cardassians.

Professor Moriarty from the Sherlock Holmes holodeck simulation reappears and seizes control of the Enterprise.

The balance of the universe is put in jeopardy when the Monkey King's sacred homeland of Shangri-La is taken over by a ruthless collector of magical artifacts.

The library is simultaneously infiltrated by DOSA and Apep; Flynn, Baird, Stone, Cassandra, Ezekiel and Jenkins must put aside their differences to save the library, the world and themselves.

A commander acts as god on a planet polluted with solar radiation.

O'Neill (Richard Dean Anderson) faces up to the death of his young son after coming into contact with a mysterious crystal.

O'Neill and the team encounter fairies who protect a planet's indigenous species by making them invisible.

The stakes are raised as the 12th precinct tries to stop Dr. Kelly Nieman and Jerry Tyson -- also known as 3XK -- before they claim another victim.

An astronaut is killed inside a Mars simulation; Castle and Beckett make a discovery that results in a shocking turn in the case.

People of Argos have short lives due to a failed experiment by a Goa'uld.

O'Neill (Richard Dean Anderson) faces up to the death of his young son after coming into contact with a mysterious crystal.

O'Neill and the team encounter fairies who protect a planet's indigenous species by making them invisible.

A commander acts as god on a planet polluted with solar radiation.

O'Neill (Richard Dean Anderson) faces up to the death of his young son after coming into contact with a mysterious crystal.

Johnny manipulates D'av into helping him find a green pool; Zeph faces possible death.

The stakes are raised as the 12th precinct tries to stop Dr. Kelly Nieman and Jerry Tyson -- also known as 3XK -- before they claim another victim.

A Starfleet lieutenant, befriended by Geordi, is implicated in the murder of a fellow officer on an isolated communication relay station.

Troi must impersonate a Romulan officer in an elaborate defection scheme involving Romulan dissidents.

When an old injury from his Starfleet Academy days leaves Picard near death, Q allows him to relive those days and make different choices.

A mysterious alien leads Worf to believe his father is in a Romulan prison camp; an engineering mishap causes Data to have a vision.

Worf tries to convince the Klingons in the colony to reject their peaceful coexistence with the Romulans and return home.

A secret sect of the Vatican Church unearths a map detailing the locations of the four cornerstones of the Library of Alexandria; Flynn and the Librarians work with an unexpected ally to stop them before the stones can be used to destroy the Library.

When people begin getting hurt in the unluckiest of ways, the Librarians follow the trail to a casino where the owner appears to possess an artifact capable of stealing people's luck.

Picard and a desperate gang of thieves are trapped on the Enterprise while the ship is being swept with deadly baryon rays.

Picard becomes intrigued and then involved with a brilliant new crew member, creating complications when a potentially deadly mission arises.

The death of Picard's archaeology professor results in a tantalizing mystery involving Klingons, Cardassians and Romulans.

A secret sect of the Vatican Church unearths a map detailing the locations of the four cornerstones of the Library of Alexandria; Flynn and the Librarians work with an unexpected ally to stop them before the stones can be used to destroy the Library.

When people begin getting hurt in the unluckiest of ways, the Librarians follow the trail to a casino where the owner appears to possess an artifact capable of stealing people's luck.

O'Neill and Teal'c become prisoners on a planet ruled by Norse gods.

The SG-1 crew hunts for a long-lost man believed to have passed through the gate years ago.

The team returns to Chulak to save the son of Teal'c and bring back larva.

A competitive detective from Hong Kong with information on a murder victim teams up with Beckett and Castle; Beckett discovers information that implies the detective -- and the murder victim -- may not be what they seem.

Detective Ryan ends up in the middle of an assassination plot when he is on the security detail of a charismatic congressman; Castle and Beckett help Ryan investigate.

The SG-1 team returns from the planet Oannes in a panic and minus Daniel Jackson, who was last seen being consumed by a column of flames; but as his comrades mourn him on Earth, Daniel is the captive of an amphibious humanoid creature known as Nem.

The SG-1 crew hunts for a long-lost man believed to have passed through the gate years ago.

The team returns to Chulak to save the son of Teal'c and bring back larva.

O'Neill and Teal'c become prisoners on a planet ruled by Norse gods.

The SG-1 crew hunts for a long-lost man believed to have passed through the gate years ago.

Dutch awakens to John at the brink of madness and the birth of D'av's child.

A competitive detective from Hong Kong with information on a murder victim teams up with Beckett and Castle; Beckett discovers information that implies the detective -- and the murder victim -- may not be what they seem.

A radioactive storm threatens the Voyager while the crew enjoys leisure time in the setting of Fair Haven, an Irish coastal village of the early 20th century.

The U.S.S. Enterprise crew comes face-to-face with their demons, and scary monsters too, when their landing party is stranded on a barren planet with a ravenous enemy.

Just as Captain Pike thinks he's figured out how to escape his fate, he's visited by his future self, who shows him the consequences of his actions.

A distress call from Lt. Noonien-Singh compels Spock to disobey orders and take the U.S.S. Enterprise and its crew into disputed space, risking renewed hostilities with the Klingons in a bid to aid their shipmate.

Commander Una faces court-martial along with possible imprisonment and dishonorable dismissal from Starfleet, and her defense is in the hands of a lawyer who's also a childhood friend with whom she had a terrible falling out.

Santa takes Flynn, Baird and Jenkins on his first vacation in centuries; the Librarians use Santa's sleigh to save Ezekiel's career-criminal mother, as well as Christmas itself, from Santa's grinch of a brother, the Patron Saint of Thieves.

Drawn into the world of Baird's favorite film noir movie, the Librarians must perfect their skills in lassoing, sharpshooting and snappy dialogue to make it out alive.

A superior race is enthralled by the Doctor's singing voice, and he considers leaving the ship to embrace a career in opera singing.

Capt. Janeway worries about crew members who are suffering from post-traumatic stress disorder after they return from an exploration.

Santa takes Flynn, Baird and Jenkins on his first vacation in centuries; the Librarians use Santa's sleigh to save Ezekiel's career-criminal mother, as well as Christmas itself, from Santa's grinch of a brother, the Patron Saint of Thieves.

Drawn into the world of Baird's favorite film noir movie, the Librarians must perfect their skills in lassoing, sharpshooting and snappy dialogue to make it out alive.

A Goa'uld takes over the persona of an ancient Egyptian fertility deity and seduces Stargate's men.

The sole survivor of a disease that wiped out a planet's population is brought to Earth.

Teal'c is accused of murdering the father of a Byrsa village resident when he was a Jaffa.

Beckett and Castle are faced with a large list of possible suspects when a personal injury attorney known as Richie Falco is murdered; a shocking secret deepens the mystery surrounding Richie's death.

A mysterious recurring dream inspires Castle and Beckett to look for answers about Castle's two-month disappearance; their search for the truth turns dangerous.

After the SG-1 team rescues refugees from war-torn Tollan, they risk court-martial to protect the planet from self-destruction.

The sole survivor of a disease that wiped out a planet's population is brought to Earth.

Teal'c is accused of murdering the father of a Byrsa village resident when he was a Jaffa.

A Goa'uld takes over the persona of an ancient Egyptian fertility deity and seduces Stargate's men.

The sole survivor of a disease that wiped out a planet's population is brought to Earth.

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

Beckett and Castle are faced with a large list of possible suspects when a personal injury attorney known as Richie Falco is murdered; a shocking secret deepens the mystery surrounding Richie's death.

When Seven of Nine is captured by alien warriors, she is forced to fight a Pendari gladiator as a contestant in a deadly game.

After witnessing the suicide of her doppelgänger, Sarah assumes her identity in hopes of escaping past troubles.

Sarah continues her con, earning "Beth" a second chance on the force; Alison may have answers.

Sarah wants to leave town after learning she is a clone; the police locate the buried body; Beth closes in on the killer.

Sarah's reunion with her daughter is hindered by her tracking; the killer gets closer to the truth.

After witnessing the suicide of her doppelgänger, Sarah assumes her identity in hopes of escaping past troubles.

Sarah continues her con, earning "Beth" a second chance on the force; Alison may have answers.

Sarah wants to leave town after learning she is a clone; the police locate the buried body; Beth closes in on the killer.

Sarah's reunion with her daughter is hindered by her tracking; the killer gets closer to the truth.

After witnessing the suicide of her doppelgänger, Sarah assumes her identity in hopes of escaping past troubles.

Sarah continues her con, earning "Beth" a second chance on the force; Alison may have answers.

Sarah wants to leave town after learning she is a clone; the police locate the buried body; Beth closes in on the killer.

The Killjoy rebels take drastic measures to clean house with a secret attack against the Rack.

As Johnny faces off with someone from his past, Dutch faces her own personal hell.

Desperate for an advantage, Dutch goes AWOL and risks a dangerous procedure that connects her to Aneela's memories.

Adm. Kirk (William Shatner), Mr. Spock (Leonard Nimoy), Dr. McCoy (DeForest Kelley) and crew embark in the overhauled Enterprise to find an intelligent entity called VGER.

Kirk (William Shatner), Spock (Leonard Nimoy) and the Enterprise crew battle an old foe (Ricardo Montalban) who blames Kirk for the death of his wife.

Kirk (William Shatner) and the crew steal the old Enterprise and head for Vulcan to reunite the mind and body of Mr. Spock.

Paul Atreides, a brilliant and gifted young man born into a great destiny beyond his understanding, must travel to the most dangerous planet in the universe to ensure the future of his family and his people.

Paul Atreides unites with Chani and the Fremen while seeking revenge against the conspirators who destroyed his family. Facing a choice between the love of his life and the fate of the universe, he must prevent a terrible future only he can foresee.

Adm. Kirk (William Shatner), Mr. Spock (Leonard Nimoy), Dr. McCoy (DeForest Kelley) and crew embark in the overhauled Enterprise to find an intelligent entity called VGER.

Kirk (William Shatner), Spock (Leonard Nimoy) and the Enterprise crew battle an old foe (Ricardo Montalban) who blames Kirk for the death of his wife.

As the Killjoys plan a theft on an armored convoy, Aneela finds herself on a desperate search for Delle Seyah.

Johnny confronts his nemesis face to face when Delle Seyah suddenly arrives to set terms of war via parley.

The Killjoy militia has everything they need to go to war, but as the battle begins, Aneela changes the entire game.

Trapped in the mysterious and mind-bending greenspace and on the run from the deadly Lady, Aneela and her father Khlyen struggle to stay one step ahead while keeping a wounded Dutch alive.

With criminals chasing an injured Johnny, D'av and Delle Seyah take drastic measures to save him.

Kirk (William Shatner) and the crew steal the old Enterprise and head for Vulcan to reunite the mind and body of Mr. Spock.

Spock (Leonard Nimoy), Kirk (William Shatner) and the Enterprise time-travel to modern-day San Francisco to bring humpback whales to the 23rd century.

A renegade Vulcan makes Kirk (William Shatner), Spock (Leonard Nimoy), McCoy (DeForest Kelley) and the Enterprise go to a planet at the center of the galaxy.

Kirk (William Shatner), Spock (Leonard Nimoy), McCoy (DeForest Kelley) and the Enterprise encounter sabotage on the way to peace talks with the Klingon Federation.

Capt. Kirk (William Shatner) and Capt. Picard (Patrick Stewart) team up to thwart mad Dr. Soran's (Malcolm McDowell) quest for the Nexus of joy.

Picard (Patrick Stewart), Riker (Jonathan Frakes) and the others set off to stop the half-robot Borg from sabotaging the first warp drive flight in 2063.

To uphold the principles of his Starfleet oath and save an alien race, Capt. Picard defies Federation orders.

The crew (Jonathan Frakes, Brent Spiner) of the Enterprise must prevent a replica of Capt. Picard (Patrick Stewart) from overtaking Earth.

O'Neill and Carter, having traveled to Earth through a Stargate, face danger in an Antarctic environment.

The caretaker of a poisoned planet turns the members of SG-1 into robots.

Daniel is transported to an alternate Earth besieged by the Goa'uld.

When an air marshal is murdered on Alexis and Castle's flight to London, the father-daughter duo must find the killer before he can carry out his plan.

When Castle and Beckett investigate the death of the creator of a long-running sketch show, they discover a secret that could explain his murder.

The Stargate project is threatened when an influential senator holds hearings to determine its fate.

The caretaker of a poisoned planet turns the members of SG-1 into robots.

Daniel is transported to an alternate Earth besieged by the Goa'uld.

O'Neill and Carter, having traveled to Earth through a Stargate, face danger in an Antarctic environment.

The caretaker of a poisoned planet turns the members of SG-1 into robots.

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

When an air marshal is murdered on Alexis and Castle's flight to London, the father-daughter duo must find the killer before he can carry out his plan.

Kirk, Spock and a scientist (Diana Muldaur) temporarily allow a trio of aliens to inhabit their bodies.

Kirk discovers his old professor is responsible for establishing a Nazi society on a planet; guest Skip Homeier.

A band of hostile aliens from the Andromeda Galaxy uses a distress signal to lure the Enterprise into a trap.

A mad starship captain (Morgan Woodward) thinks he has discovered immortality on a war-ravaged world.

A supercomputer with a mind of its own controls the Enterprise during a battle exercise; guest William Marshall.

Flynn is excited to team up with his Librarian hero, Darrington Dare, to take down an ancient and powerful enemy let loose in the modern day; Darrington leaves the Librarians with a dire warning that there can only be one Librarian.

When Baird goes after Nicole Noone in an attempt to repair her rift with the Library, she winds up joining Nicole on a mission to retrieve a dangerous artifact before it falls into the hands of Russian grave robbers.

The Enterprise discovers the wreckage of a Federation vessel in orbit around an Earth-like planet where a gladiator-type empire continues to flourish.

On a mission to 1960s Earth, the Enterprise finds a human agent (Robert Lansing) working for aliens; guest Teri Garr.

The crew of the starship USS Enterprise, commanded by the charismatic Capt. James T. Kirk with half-human/half-Vulcan First Officer Spock, boldly explores outer space and encounters a wide variety of alien life forms in the 23rd century.

Flynn is excited to team up with his Librarian hero, Darrington Dare, to take down an ancient and powerful enemy let loose in the modern day; Darrington leaves the Librarians with a dire warning that there can only be one Librarian.