Exploring a new planet, Sheppard and his crew find Ford living in a cave, under the influence of a powerful drug and planning revenge on the Wraith.

The crew aboard an ancient ship has information about a weakness in the Wraith's technology.

The team races to find a cure for the retrovirus that is mutating Sheppard into a Wraith.

Dr. Beckett inadvertently puts Sheppard's life at risk while experimenting with a retrovirus.

Unperfected ancient technology could become the new source of energy for Atlantis.

The team visits a technologically advanced planet that is mysteriously unharmed by the Wraith.

A technical glitch during their rescue from a Wraith ship forces McKay and Lt. Cadman to coexist inside McKay's body.

A fierce survivor of a Wraith attack must help the team combat the dangerous, infected Ford.

McKay fears that a computer virus on Col. Caldwell's ship might be the work of the Wraith.

Atlantis races to save team members who are trapped in a collapsed compound; a pregnant Teyla begs Kanann to help save her.

While on an exploratory walk on a jungle planet, Lt. Col. Sheppard touches a crystalline growth and becomes host to an infectious energy form.

After stealing information from the Atlantis database, two Wraith hive ships travel toward Earth to launch an attack.

The Atlantis team rushes to destroy an advanced wraith hive ship before it presents a threat to the Earth.

Detective John Sheppard attempts to solve a string of unusual murders in Las Vegas.

Dr. Keller wakes to find her consciousness inside the body of a notorious thief who has been sentenced to death for her crimes.

Atlantis receives a distress signal from a Hive ship in which all the Wraith on board have placed themselves in stasis.

Dr. McKay reluctantly travels to Earth to attend a scientific demonstration by his former rival.

Richard Woolsey struggles to remain the leader of Atlantis; McKay and Zelenka investigate a mysterious find; Sheppard is captured by an old enemy.

A vengeful foe infiltrates the Gate Room in an attempt to take control of Atlantis.

Sheppard and his team are captured by a newly formed galactic coalition and made to stand trial.

Col. Sheppard and his team struggle to save survivors of the Hoffan plague from being sacrificed to the Wraith.

A team of explorers made up of soldiers and scientists travels through a Stargate, an ancient portal to other planets. They use the Stargate to explore new worlds, forge ties with friendly civilizations and protect Earth from hostile forces. The TV series is based on the theatrical film "Stargate."

Led by the brilliant scientist Dr. Nicholas Rush, a band of civilians and soldiers faces a whole new world -- and fights for survival -- after their secret military base is attacked. The survivors emerge aboard an ancient ship, unable to return to Earth and now on a course to parts unknown. Amid the darkness the group must meet its most basic needs of food, water and air while discovering the secrets of the ship's Stargate to ultimately survive.

This update of the late-1970s series takes a decidedly darker tone as what's left of humankind struggles for survival against the robot Cylons, who have killed millions. The Galactica, led by William Adama, protects a patched-together fleet of civilians -- led by de facto president Laura Roslin -- in search of a mythical planet called Earth.

In the tradition of the 1960s cult show of the same name, this anthology series features different actors, many well-known from their previous work, in each episode. The episodes often explore eerie and often supernatural themes with a science-fiction element.

Kathryn Janeway is the captain of a starship that is lost in space and must travel across an unexplored region of the galaxy to find its way back home. On its way, the crew encounters different species they must deal with, but find that all their adventures only make them long for home.