When Scooby-Doo and the Mystery Inc. gang visit a famous mansion once owned by horror filmmakers Jeffrey and Madeline Mayhew, they discover they've arrived at a pretty creepy place. With its maze-like layout, strange stairways that abruptly end at the ceiling, doors opening to reveal brick walls or two-story drop-offs, and multiple secret passageways, the mansion has become a top tourist attraction. But with reports of ghosts with glowing eyes scaring...