Scooby-Doo (Original Movie) Happy Halloween

Feature-length animated adventure following Scooby-Doo (voice of Frank Welker) and the Mystery Inc. gang as they investigate another mystery. On Halloween night, Scooby, Shaggy (Matthew Lillard), Daphne (Grey Griffin), Velma (Kate Micucci) and Fred (Welker) team up with Elvira, Mistress of the Dark (Cassandra Peterson), and Bill Nye the Science Guy (Bill Nye) to tackle a familiar foe whose flying jack-o'-lanterns are terrorising unsuspecting trick-or-treaters.