Season 4, Episode 4 Metamorphosis
First Aired: October 9, 2008
Sam and Dean encounter a man with a mysterious infection that transforms him into a flesh-eating monster. Sam thinks the man can be changed through reason to curb his newfound instincts, but Dean believes the most-humane thing to do is to kill him. Dameon Clarke guest stars.
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- Premiered: September 21, 2006
- Rating: TV-14
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- Premise: Two brothers hunt demons, ghosts and other supernatural entities as they investigate crimes caused by paranormal forces. (more)