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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!
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Original title Happy Halloween Scooby-Doo!
IMDb Rating 6.6 450 votes
TMDb Rating 8 52 votes
Scooby-Doo / Fred Jones (voice)
Daphne Blake (voice)
Shaggy Rogers (voice)
Velma Dinkley (voice)
Jonathan Crane (Scarecrow) (voice)
Sheriff / Cutler Tot (Voice)