The Winchester boys (Jensen Ackles and Jared Padalecki) have faced various dangers on the hit CW show Supernatural, now it looks like they have to contend with Paris Hilton (Repo! The Genetic Opera). An insider tells E! that the tabloid princess is set to appear in an episode of season five of the series. No word as to who she’ll play, but the E! tipster says there’s no need to freak out about her involvement and that show runner Eric Kripke knows what he’s doing.