Hunt high school beasties a la Buffy the Vampire Slayer, travel the country to bring down unnatural creatures like the Supernatural Winchester brothers, or head up the government investigation like Mulder and Scully. This hardcover update replaces the softcover edition as the new core book in the Monster of the Week line. It adds two playbooks: the Snoop and the Spooktacular and adopts phenomena mysteries, alternative weird moves, and other rules options from Tome of Mysteries into the core book for the line.