Supernatural (TV series)/Recap/S06/E21 Let It Bleed

Season 7, Episode 21:

Let It Bleed
When Crowley tries to get to Dean by abducting Lisa and Ben, the Winchesters turn to an unexpected source for help. Meanwhile, Bobby learns of another visitor from Purgatory.

Tropes
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 * I Have Your Wife
 * Laser-Guided Amnesia -- Dean's solution to Lisa and Ben being in danger