Watch Scooby-Doo's Greatest Mysteries (1999) : Full Movie Online Free SCOOBY-DOO fans have spoken! 4 of SCOOBY-DOO'S most popular mysteries - selected by the fans themselves - are now available in this fun DVD. Watch as Scooby-Doo gets into a mixed-up mystery when he unexpectedly meets the seaweed-covered ghost of Captain Cutler in "A Clue for Scooby-Doo!" Next, see the seafaring sleuths collide with a mystery ship and try to uncover clues to a vanished crew in "Hassle in the Castle!" Then, follow Scooby-Doo and the Mystery, Inc. gang as they outwit a bank robber in "Jeepers, It's the Creeper!" And finally, see them take to the stage to crack some crazy capers in "The Backstage Rage."