Stargate Atlantis - Season 4

E01 Adrift (2)

Sep 27, 2007

Floating in deep space with the city's protective shield failing, the team must do all they can to keep Atlantis alive. A radical injury threatens Dr. Weir's life.

E02 Lifeline (3)

Oct 04, 2007

Colonel Sheppard and his team embark on a risky mission to steal a Z.P.M. power module from the Replicators -- but must rely on a compromised Dr. Weir to succeed.

E03 Reunion

Oct 11, 2007

When a group of Ronon's people enlist the team's help in raiding a Wraith weapons facility, Ronon reconsiders whether his future lies in Atlantis or with his friends.

E04 Doppelganger

Oct 18, 2007

During an off-world mission Colonel Sheppard unknowingly becomes host to an alien entity, which infects others in Atlantis and afflicts them with terrifying nightmares.

E05 Travelers

Oct 25, 2007

Colonel Sheppard is captured by the inhabitants of a generational ship and their beautiful leader, who wish to use his ability to use Ancient technology for their own ends.

E06 Tabula Rasa

Nov 01, 2007

When a virus causes amnesia in everyone except Teyla and Ronon, the Atlantis team must work together to find a cure before their memories fade entirely.

E07 Missing

Nov 08, 2007

During a visit to New Athos, Teyla and Dr. Keller find themselves on the run from a primitive tribe of warriors.

E08 The Seer

Nov 15, 2007

The team meets a man with extraordinary prophetic abilities, who gives them a dark prediction about Atlantis's future. The Wraith seek a new alliance with Atlantis in their war with the Replicators.

E09 Miller's Crossing

Nov 29, 2007

Rodney McKay goes in search of his sister on Earth after she is kidnapped by the head of a powerful corporation.

E10 This Mortal Coil (1)

Dec 06, 2007

A mysterious drone crashes into Atlantis, indicating that the Replicators may have found the city. But when Elizabeth Weir appears, the team realizes that the probe is just a part of a bigger mystery.

E11 Be All My Sins Remember'd (2)

Jan 03, 2008

With a plan to potentially extinguish the Replicator threat, the Atlantis team must seek an alliance with a fleet of Wraith ships.

E12 Spoils of War

Jan 10, 2008

The team finds their former Wraith ally's hive ship drifting in space, which leads them to a secret project that could turn the tide of a civil war.

E13 Quarantine

Jan 17, 2008

An automated lockdown traps Atlantis personnel in various parts of the city, each of them hoping the others will come to their rescue.

E14 Harmony

Jan 24, 2008

Colonel Sheppard and Dr. McKay must protect a child princess on a pilgrimage before she can become queen, and learn that she has dangerous enemies threatening her life.

E15 Outcast

Jan 31, 2008

While on personal leave on Earth, Sheppard and Ronon learn that scientists have engineered a human-form Replicator -- who is now on the loose.

E16 Trio

Feb 07, 2008

McKay, Carter, and Keller are trapped in an underground chamber while on an off-world mission, with no apparent means of escape.

E17 Midway

Feb 14, 2008

Teal'c visits Atlantis to counsel a headstrong Ronon, who is up for review by the I.O.A. But the two must work together when the Wraith invade the Midway space station in order to reach Earth.

E18 The Kindred (1)

Feb 21, 2008

As a mysterious new illness sweeps through the Pegasus Galaxy, Teyla is convinced by a vision that the father of her child is trying to communicate with her.

E19 The Kindred (2)

Feb 28, 2008

The team is shocked when an old friend, believed to be dead, miraculously returns to them. Teyla plans an escape from Michael's captivity.

E20 The Last Man (1)

Mar 06, 2008

Sheppard returns to Atlantis after a mission and finds the city abandoned, all systems dead -- and instead of ocean, sand dunes as far as the eye can see.