Winchester Radio -- Supernatural's Torn and Frayed

 Naomi (guest star Amanda Tapping) tells Castiel (Misha Collins) that Crowley (guest star Mark Sheppard) is holding an angel captive and Castiel must rescue him before Crowley finds out their secrets.  Castiel turns to Dean (Jensen Ackles) for help.  Meanwhile, Sam (Jared Padalecki) meets with Amelia (guest star Liane Balaban) who asks him to make a choice: stay with her or leave and never contact her again.   Robert Singer directed the episode written by Jenny Klein.