Total Drama: Revenge of the Island

Season 1, Episode 5: Backstabbers Ahoy!

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As one team deals with their newest member, the other is severely divided by one contestant, who shares feelings for two girls at once. When the contestants' most prized possessions start vanishing, one player initially accuses their teammate, but then places the blame on someone else. Although they figure out the true scheme, it is not enough to prevent elimination.