Join Scooby-Doo, Shaggy and the Mystery Inc. crew as they head to Chicago for Talent Star, a hit talent show in which Fred and Daphne are finalists with some high hopes. Unlucky for them, the competition is frightful as the … Frank Welker, Mindy Cohn, Grey DeLisle, Matthew Lillard, Isabella Acres, Troy Baker, Eric Bauza Added on HBO 2022-06-18. Youtube Trailer