Cast: Bill Nye, Cassandra Peterson, Dwight Schultz, Frank Welker, Grey DeLisle, Kate Micucci, Matthew Lillard
Summary
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!
What do you think of Happy Halloween, Scooby-Doo!? Add your rating!
