Where can I watch “Stargate Atlantis” Season 5 Episode 18 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

Do I need to watch earlier episodes before “Identity”?

Watching earlier episodes in season 5 helps you follow the plot and character arcs leading into this episode.

Watch Stargate Atlantis Season 5 Episode 18 Online

“Identity” — Watch "Stargate Atlantis" Season 5 Episode 18 online in HD for free. Check streaming providers, cast, and episode details.

Dec 11, 2008 Season 5 Episode 18 44 min M

7.2 ★ ★ ★ ★ ★

21 votes

Stargate Atlantis Season 5

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Season 5 Episode 18 — Aired on Dec 11, 2008 • runs about 44 minutes.

Directed by William Waring.

Written by Carl Binder.

Notable cast/guest names in this episode include Joe Flanigan, David Hewlett, Rachel Luttrell, Jewel Staite.

This page includes 2 official still(s) (when available) plus legal availability links.

Looking for “watch Stargate Atlantis Season 5 Episode 18 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Dr. Jennifer Keller's body is inadvertently taken over by a cunning thief, Neeva Casol. While Neeva tries to escape Atlantis, Keller finds herself imprisoned with a death sentence on another planet, forcing the team into a race against time to return Keller to her original body before she is put to death.