You will Watch The Scooby-Doo Show Season 3 Episode 11 online for free episodes with HQ / high quality. Stream cartoons The Scooby-Doo Show Episode 35 The Diabolical Disc Demon. The gang goes to Decade Records recording studio to see a live recording from their friend Jimmy Lewis. However, the building is haunted by the ghost of a former singer who seems to want a half-finished song by a missing writer and will stop at nothing until he gets it. The gang must find the missing writer and solve the mystery before it’s too late.