The Actives are back in the "Dollhouse", but somebody is suspiciously out of place. Topher discovers a chip that reveals a traitor is inside the house. Thus, Echo and Sierra are programmed as spy hunters to uncover the culprit.
Meanwhile, Ballard receives surprising news from Mellie, and Adelle harbors a secret. Called "Spy in the House of Love", the episode will air April 10 right after the season finale of "Terminator: The Sarah Connor Chronicles".
On another news, Dichen Lachman who plays Sierra did an interview with TV Guide to address on some issues including the shower scenes of the dolls. When asked whether the actors have pretty much seen each other naked, she said with a laugh "Yes. Yes. The episode where Victor has a 'man reaction,' we had to shoot the shower scenes like continuously. I had pasties on and a thong, but the pasties kept peeling off.... We have seen a lot of each other. A lot. "
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