Supernatural - Faith Season 1 Episode 12

During a fight with a demon, Dean is electrocuted, causing serious, and potentially deadly, damage to his heart. Sam tries to find a way to save Dean, and comes across a preacher who claims he can cure the incurable. But the brothers soon discover that the preacher's miracles are happening due to help from the Grim Reaper, who trades one life for another, "less worthy" life.