Scooby-Doo! Curse of the Lake Monster is a 2010 American made-for-television comedy horror mystery film directed by Brian Levant for Cartoon Network and based on the Saturday morning cartoon series Scooby-Doo by Hanna-Barbera. It is a sequel to the 2009 film Scooby-Doo! The Mystery Begins. Robbie Amell, Hayley Kiyoko, Kate Melton, Nick Palatas and Frank Welker cast reprise their roles. The film was shot in Santa Clarita, California and Sherwood Country Club in Thousand Oaks, California and premiered on October 16, 2010.

Plot

Summer vacation has come and Velma, Shaggy and Scooby-Doo meet up with Fred and Daphne so they can go to meet Daphne's uncle, Thornton "Thorny" Blake V, who has given them summer jobs at his country club in Erie Point in order to pay back damages from a prior mystery. The night of the club's opening party, a huge frog-like monster suddenly appears and wreaks havoc. The gang decides to investigate the only person who has ever taken a picture of the lake monster, a lighthouse keeper named Elmer Uggins. He then tells them the story of the lake monster: when people were first settling in Erie Point, a witch named Wanda Grubwort warned them not to come onto her land. They paid no attention to her, so she used her magic staff - which used moonstones as the source of her power - to turn a frog into a horrible monster that attacked the villagers. Wanda was later tried for her crimes and burnt at the stake.