Rachel Luttrell

After Anthony DiNozzo, Sr. (guest star Robert Wagner) is found in a car with a dead body in the trunk and no memory of the previous night, the NCIS team must figure out if he is capable of murder. Also available on iTunes and VUDU

Major General Jack O'Neill's mission to defend Atlantis fails as he and Richard Woolsey are taken prisoner during an Asuran assault on the city. Sheppard's team, Dr. Weir and Dr. Carson steal a Jumper from Stargate Command on Earth and come back to Pegasus galaxy with a plan to retake Atlantis.

While walking with Schanke and Knight to discuss his possible promotion, vice squad detective Jim Anderson is shot and killed by sniper fire. Angered by the shooting of his former partner, Schanke dismisses Stonetree's suggestion that he take some time off and insists he be allowed to investigate the killing. However, when an anonymous threat indicates that he is also a target, Schanke is taken to a seedy hotel for protection, where an attempt on his life kills the young cop assigned to guard him. Worried that someone inside the precinct may be after him, Nick asks Janette to hide Schanke at her nightclub during the investigation. Reluctantly, Janette agrees, reminded of a time when Nick risked his life to save her and Lacroix from a band of vampire hunters. While growing restless during the wait, Schanke explores the club, nearly discovering a group of vampires sleeping in a basement storeroom. Meanwhile, when a routine check turns up little information about him in the department's records, Nick turns to Larry Merlin, another vampire and computer expert, to stem an inquiry into his past. Taking a break at a nearby newsstand, Schanke spots a magazine ad threatening harm to his family unless he appears at the police academy target range. Commandeering a passing car, Schanke heads for the academy followed by Nick, who finds his partner under fire by Macavoy, an embittered police academy classmate who was dismissed before graduating. However, when Macavoy fires again, the wounded Schanke gets off a shot that kills him, ending his murderous quest for revenge. Finally, with Merlin's help, Nick avoids an embarrassing investigation of his past.

When Schanke becomes the target of an avenging assassin, Nick races the clock to save his partner.

A band of researchers travels through a mysterious teleporter and finds the fabled lost city of Atlantis -- and a dangerous alien race. In Season 2 of the popular sci-fi series, the squad learns more about their new nemesis, the Wraith, and the strange devices left behind by the extinct Ancients. Led by Dr. Elizabeth Weir (Torri Higginson) and Maj. John Sheppard (Joe Flanigan), the team finds adventure daily at the far end of the universe.

"Stargate SG-1" co-star Amanda Tapping joins the "Stargate Atlantis" cast this season as Col. Samantha Carter, bringing her much-needed scientific knowledge and military chops to the mission's base station. Also joining the crew in its exploration of the lost civilization of Atlantis and the parallel galaxy of Pegasus is chief medical officer Dr. Keller (Jewel Straite). Together, they face a grim future as the damaged city drifts in space.

Sanatoriums, parallel universes and more evil plots hatched by the Wraiths highlight Season 3 of the popular sci-fi series, which chronicles the adventures of Dr. Elizabeth Weir (Torri Higginson), Lt. Col. John Sheppard (Joe Flanigan) and the rest of the Atlantis crew. Guest stars include Beau Bridges, David Ogden Stiers and a special appearance by Richard Dean Anderson, the star of "Stargate SG-1," the series that spun off "Stargate Atlantis."

Forgotten worlds and parallel universes abound in the fifth season of this popular sci-fi series. Follow the continuing adventures of Lt. Col. John Sheppard (Joe Flanigan), Col. Samantha Carter (Amanda Tapping), Dr. Keller (Jewel Straite) and the rest of the Atlantis crew as they attempt to unlock the secrets of the Ancients and protect the Earth's inhabitants from the threats posed by the hostile forces of the Pegasus galaxy.

This spin-off of the Sci-Fi Channel's hugely popular "Stargate SG-1" series finds its crew, led by Dr. Elizabeth Weir (Torri Higginson), on an alien-formed base located in Antarctica, wherein lies the lost civilization of Atlantis. What's more, they've also discovered a parallel world of sorts in a galaxy known as Pegasus, but what lies there may not offer salvation; instead, it seems to be posing an imminent danger to the inhabitants of Earth.