A relaxing spa getaway evolves into a prehistoric panic when Scooby-Doo and the gang uncover the horrible Phantosaur, an ancient legend come to life to protect hidden treasures buried in secret desert caves. But this scare-a-saurus doesn’t stand a chance … Frank Welker, Mindy Cohn, Grey DeLisle, Matthew Lillard, Cathy Cavadini, John DiMaggio, Michael Gough Added on HBO 2022-06-07. Youtube Trailer