Scooby-Doo and the gang team up with their pals, Bill Nye The Science Guy and Elvira Mistress of the Dark, to solve this mystery of gigantic proportions and save Crystal Cove!
Original title Happy Halloween, Scooby-Doo!
IMDb Rating 6.2 1,778 votes
TMDb Rating 7.9 207 votes
Scooby-Doo / Fred Jones (voice)
Alpha Jackal Lantern / Federal Agent Malarkey (Voice)
Autopilot / Parent (Voice)