In the first half of the two-hour Supernatural season finale, the boys get a little distracted from the mission to stop Crowley and Castiel open the door to Purgatory. Crowley kidnaps Dean‘s ex-girlfriend Lisa and her kid Ben, making Dean go on a one-man mission of destruction. But that‘s not the only ex-girlfriend in the episode, because it turns out one of Bobby‘s former romances was a lot older than she said. Like, 900 years older.
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