- Episode Name:Goodbye Stranger
- Air date:3/20/2013
- Summary:Castiel (Misha Collins) reappears in Sam (Jared Padalecki) and Dean's (Jensen Ackles) life and tells them Crowley (guest star Mark Sheppard) has unleashed several demons into a small town. The demons are looking for Lucifer's Crypt, which holds a valuable asset, but Castiel lies to Sam and Dean about what it is.
