Luke Busey

Season four of ABC's "Celebrity Wife Swap" is back bringing viewers more of its signature spin on the critically-acclaimed reality series, "Wife Swap," by revealing the various ways celebrities live their lives. In this series, two members of celebrity families swap lives (but not bedrooms), and embark on a journey like no other to experience another family's way of life, including raising children, cultural and religious traditions and family dynamics, all while dealing with life in the spotlight. In the end, the couples have the opportunity to reflect and re-discover their connections and what brought them together in the first place.

Peter confides in his parents (Lizzy Caplan, Antony Starr) about mysterious tapping in his bedroom wall, but they say it's just an old house. As his fear grows, so do his doubts.