Scooby-Doo and the Spooky Castle Adventure

The town of Crystal Cove and surrounding areas are being terrorized by monsters and ghosts, and now the local Baroness Maria Richman has gone missing and it is suspected that the ghost sightings have something to do with it! Tasked with solving the crime, you arrive at the same conclusion as Mystery Incorporated. But when you get to the Spooky Castle, Mystery Inc. gets locked out, at the same time you get locked in! You soon realize that they’re able to help by communicating clues via magic portraits inside the Castle. After discovering a secret dungeon and monster lab in the castle, you come to the conclusion that the person responsible almost certainly works in the castle - but who could it be as there are several suspects?