Stargate SG-1: Season 4, Episode 21

4 - 21: Double Jeopardy

SG-1 returns to a planet they helped free from Goa'uld enslavement, but its people are not happy to see them. Instead they are angry that the Goa'uld came back when SG-1 told them they wouldn't. Complicating matters, SG-1 doesn't remember their previous visit.