Castle 8×18 Sneak Peek “Backstabber”

Castle 8×18 “Backstabber” Sneak Peek – An MI6 agent shows up at Castle’s PI office and tells him that Haley Shipton wasn’t framed as she claims; he has proof she was a conspirator in the day’s criminal events. He also alleges that during her final mission for MI6, she let her partner die to save her own skin. Should Castle and Alexis trust Haley?