Sara O'Neill

Sara O'Neill was the wife of Jack O'Neill. After their son Charlie accidently killed himself with Jack's gun, their marriage ended.

A little over a year after their divorce, Sara was approached by a man she thought was Jack, but who was, in fact, an alien duplicate. The alien told her that he/it was looking for Charlie and that he/it had to get back to the Stargate, which she had never heard of. When Sara saw the real Jack O'Neill she was very surprised.