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Looking to watch Supernatural Season 4 Episode 18 online? TV Fanatic is your destination for every paid and free streaming option of the Supernatural S4E18 full episode from 2 affiliates.

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Episode Details

Supernatural Season 4 Episode 18: "The Monster At the End of This Book"

Sam and Dean find a series of books named "Supernatural" that is based on their lives as demon hunters. They track down the writer, Carver Edlund, who turns his visions into the books.