About this programme
7/22. O'Neill is knocked unconscious and replaced by an alien double while on a mission - leaving it up to his colleagues to notice the exchange before disaster strikes. Richard Dean Anderson stars.
Cast and crew
Cast
- Col Jack O'Neill
- Richard Dean Anderson
- Dr Daniel Jackson
- Michael Shanks
- Maj Samantha Carter
- Amanda Tapping
- Teal'c
- Christopher Judge
- Share this episode
-