Stargate: Atlantis Doppelganger (Season 4, Episode 4)
TV-PG
TV Episode | 44 min | Action, Adventure, Drama

Stargate: Atlantis

Doppelganger (Season 4, Episode 4)

TV-PG

TV Episode | 44 min | Action, Adventure, Drama

While exploring a new planet, Sheppard started to watch a strange crystal. He doesn't know why, but he had to touch it. Back on Atlantis, everybody but him started to have some bad nightmares.

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Cast	+ Add Cast
17 cast members

Name	Known for
Joe Flanigan Lt. Colonel John Sheppard Lt. Colonel John Sheppard See fewer	Stargate: Atlantis (2004)
Amanda Tapping Colonel Samantha Carter Colonel Samantha Carter See fewer	Stargate SG-1 (1997)
Rachel Luttrell Teyla Emmagan Teyla Emmagan See fewer	Stargate: Atlantis (2004)
Jason Momoa Ronon Dex Ronon Dex See fewer	Aquaman (2018)
David Hewlett Dr. Rodney McKay Dr. Rodney McKay See fewer	Guillermo del Toro's Cabinet of Curiosities (2022)
Jewel Staite Dr. Jennifer Keller Dr. Jennifer Keller See fewer	Firefly (2002)
Claire Rankin Dr. Kate Heightmeyer Dr. Kate Heightmeyer See fewer	Son of a Critch (2022)
David Nykl Dr. Radek Zelenka Dr. Radek Zelenka See fewer	Stargate: Atlantis (2004)
Kavan Smith Major Evan Lorne Major Evan Lorne See fewer	Stargate: Atlantis (2004)
Linda Ko Med-tech Med-tech See fewer	To All the Boys: P.S. I Still Love You (2020)
Yee Jee Tso Technician Technician See fewer	Antitrust (2001)
Tony Baretta Smitty (uncredited) Smitty (uncredited) See fewer	The Good Doctor (2017)
D. Harlan Cutshall Marine (uncredited) Marine (uncredited) See fewer	Tomorrowland (2015)
Craig Fraser Marine (uncredited) Marine (uncredited) See fewer	Mayor of Kingstown (2021)
Ed Huber Coughlin (uncredited) Coughlin (uncredited) See fewer	Summer of 84 (2018)
Ari Solomon Billick (uncredited) Billick (uncredited) See fewer	The Possession (I) (2012)
Tiffani Timms Ellen (uncredited) Ellen (uncredited) See fewer	Scooby-Doo 2: Monsters Unleashed (2004)