Following are episodes that aired as part of season 4 of Stargate Atlantis.
401. Adrift
Season 4 begins as Doctor Weir clings to life and Doctor McKay tries to save Atlantis, which is badly damaged and lost in space after the Replicator attack. Amanda Tapping joins the cast.
• Fri, Sep 28, 2007
• Directed by Martin Wood
• Written by: Martin Gero
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Torri Higginson (Dr. Elizabeth Weir). Jewel Staite (Dr. Jennifer Keller). David Nykl (Dr. Radek Zelenka). Michael Beach (Colonel Abe Ellis). Bill Dow (Dr. Bill Lee). Linda Ko (Marie).
402. Lifeline
McKay and Sheppard prepare to steal a ZPM from the Replicator home world; Col Samantha Carter links up with the Apollo to search for Atlantis.
• Fri, Oct 5, 2007
• Directed by Martin Wood
• Written by: Carl Binder
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Torri Higginson (Dr. Elizabeth Weir). Michael Beach (Colonel Abe Ellis). David Nykl (Dr. Radek Zelenka). Bill Dow (Dr. Bill Lee). David Ogden Stiers (Oberoth). Sharon Taylor (Replicator Technician).
403. Reunion
A mission against the Wraith has the Atlantis team collaborating with a group of Satedans from Ronon's past.
• Fri, Oct 12, 2007
• Directed by William Waring
• Writer: Joseph Mallozzi and Paul Mullie
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Christopher Judge (Teal'c). David Nykl (Dr. Radek Zelenka). Scott Heindl (Wraith). Aleks Paunovic (Rakai). Kyra Zagorsky (Ara). Mark Dacascos (Tyre).
404. Doppelganger
While exploring a jungle planet, Lt Col Sheppard comes into contact with a crystalline growth that turns him into a host for an infectious alien life form.
• Fri, Oct 19, 2007
• Directed by Robert C. Cooper
• Written by: Robert C. Cooper
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Jewel Staite (Dr. Jennifer Keller). Claire Rankin (Dr. Kate Heightmeyer). David Nykl (Dr. Radek Zelenka). Kavan Smith (Major Evan Lorne). Linda Ko (Med-tech). Yee Jee Tso (Technician).
405. Travelers
On a return flight to Atlantis, a jumper is seized and its pilot, Lt Col Sheppard, is taken prisoner by Larrin (Jill Wagner), the commander of a rogue human ship.
• Fri, Oct 26, 2007
• Directed by William Waring
• Writer: Joseph Mallozzi and Paul Mullie
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter*). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Jill Wagner (Larrin). Kavan Smith (Major Evan Lorne). Sean Rogerson (Nevik). Michael Cram (Silas). Scott Heindl (Wraith). Chris Kalhoon (Crewman).
406. Tabula Rasa
The crew suffers from amnesia after plant samples from their new home planet unleash a virus that affects everyone except Teyla and Ronon.
• Fri, Nov 2, 2007
• Directed by Martin Wood
• Written by: Alan McCullough
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Jewel Staite (Dr. Jennifer Keller). David Nykl (Dr. Radek Zelenka). Kavan Smith (Major Evan Lorne). Brenda James (Dr. Katie Brown). Zach Selwyn (Scientist #2). Niall Matter (Lt. Kemp).
407. Missing
Teyla and Doctor Keller uncover a mystery on New Athos, where they find an abandoned Athosian settlement and a hostile warrior tribe.
• Fri, Nov 9, 2007
• Directed by Andy Mikita
• Written by: Carl Binder
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter*). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Jewel Staite (Dr. Jennifer Keller). Johann Helf (Nabel Golan). Danny Trejo (Omal). Glenn Ennis (1st Warrior).
408. The Seer
Atlantis receives a visitor with psychic abilities, who delivers a dark forecast about the outpost
• Fri, Nov 16, 2007
• Directed by Andy Mikita
• Written by: Alan McCullough
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter). Rachel Luttrell (Teyla Emmagan). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Martin Jarvis (Davos). Christopher Heyerdahl (Male Wraith). Jewel Staite (Dr. Jennifer Keller). Kimberley Warnat (Linara). Robert Picardo (Richard Woolsey).
409. Miller's Crossing
Jeanie Miller (Kate Hewlett), Doctor Rodney McKay's sister, is kidnapped on Earth, prompting a response from the Atlantis team.
• Fri, Nov 30, 2007
• Directed by Andy Mikita
• Written by: Martin Gero
• Cast: Joe Flanigan (Lt. Colonel John Sheppard). Amanda Tapping (Colonel Samantha Carter*). Rachel Luttrell (Teyla Emmagan*). Jason Momoa (Ronon Dex). David Hewlett (Dr. Rodney McKay). Kate Hewlett (Jeanie Miller). Christopher Heyerdahl (Wraith). Peter Flemming (Agent Malcolm Barrett). David Nykl (Dr. Radek Zelenka). Brendan Gall (Kaleb Miller). Gary Jones (Chief Mst Sgt. Walter Harriman).
