Season 9, Episode 20 Bloodlines
First Aired: April 29, 2014
Sam and Dean look into monster families that are running Chicago's underbelly, including a clan of shape-shifters and a group of werewolves. Meanwhile, they meet someone who holds a personal grudge against the creatures.
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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)