When Jack is injured unintentionally by a crystal alien, the alien duplicates Jack's form and out of fear of retribution tries to heal Jack. He returns to Earth in place of Jack, while Jack is still unconscious on the planet, to find the one thing he feels will accomplish this; the one thing that cannot be found again. Meanwhile, the 'real' Jack has returned and is trying to convince SGC that he is who he says he is.
Episode rating
Cast of episode
58
29
6
6
1
- Colonel Jack O'Neill
- Major Samantha Carter
- Dr. Daniel Jackson
- Teal'c
- Major General George Hammond
- Dr. Janet Fraiser
- Sara O'Neill
- Sgt. Walter Harriman
- Sara's Father
- Charlie O'Neill
- Senior Cop
- Nurse
- Laboratory Assistant
- Guard NCO