UNMASK THE MYSTERY! Ruh-roh! Fred's cousin, Jed, is nowhere to be found! His animatronic monsters have gone haywire and are attacking everyone in sight! It's up to Scooby-Doo and Mystery, Inc. to stop the creepy costumed creatures and find Jed before it's too late...

• Use the Nintendo DS Stylus to defeat monsters, investigate clues and play mini-games
• Explore Haunted Mansions, spooky amusement parks and more
• Wear amazing costumes with special powers to defeat monsters