: Dean finds Lisa possessed by a demon. During an exorcism, the demon forces Lisa to stab herself with a razor.
: At the hospital, Castiel heals Lisa's life-threatening wounds. Knowing they will never be safe while they remember him, Dean asks Castiel to erase their memories of him entirely. Watch www xrysoi se Supernatural S06E21
: Dean teams up with the angel Balthazar, who acts as a double agent to lead him to the warehouse where they are held. : Dean finds Lisa possessed by a demon