Supernatural (TV series)/Recap/S07/E17 The Born-Again Identity

Season 7, Episode 17:

The Born-Again Identity
When Sam’s coping skills stop working, Lucifer drives him to the brink, forcing Sam to enter a mental hospital. Fearing for his brother's life, Dean takes matters into his own hands, calling upon every hunter he knows. He receives the name of a healer from one hunter, only to find a familiar face waiting for him.

Tropes

 * Back From the Dead:
 * Easy Amnesia
 * Enemy Mine: Dean and Meg.
 * Flash Back: Of the mid-battle variety,
 * Sealed Good in A Can:
 * Shout Out: The episode title is a reference to The Bourne Identity, a story about an assassin who loses his memory.
 * Villainous Rescue