Mar 24, 2015 6:43 PM EDT
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Two brothers hunt demons, ghosts and other supernatural entities as they investigate crimes caused by paranormal forces.
Premiered: September 21, 2006
Sam sets out to find a magical box built by the former Man of Letters Magnus in the hopes that it can cure Dean of the Mark of Cain.
Charlie Bradbury calls Sam & Dean to tell them she found the Book of the Dead, which might help remove the Mark of Cain. Castiel & Metratron (CURTIS ARMSTRONG) take a road trip.
While Sam and Castiel follow up on a lead about the Mark of Cain, Dean and Rowena face off against each other.
When Crowley captures Olivette (guest star TERYL ROTHERY), the leader of the Grand Coven, Rowena pleads her case to be allowed to practice magic freely again.