Season
Season 5 Episode
- Season 4 Adrift (2)
- Season 4 Lifeline (3)
- Season 4 Reunion
- Season 4 Doppelganger
- Season 4 Travelers
- Season 4 Tabula Rasa
- Season 4 Missing
- Season 4 The Seer
- Season 4 Miller's Crossing
- Season 4 This Mortal Coil (1)
- Season 4 Be All My Sins Remember'd (2)
- Season 4 Spoils of War
- Season 4 Quarantine
- Season 4 Harmony
- Season 4 Outcast
- Season 4 Trio
- Season 4 Midway
- Season 4 The Kindred (1)
- Season 4 The Kindred (2)
- Season 4 The Last Man (1)
Stargate Atlantis - Season 4 Episode 4 Doppelganger
8.03 45 minutes 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.
