Scooby-Doo is probably the world's best-known and most loved cartoon pooch. Scholastic's books are the #2 Scooby licensed product in the world! Jinkies! The kids from Mystery, Inc. are spending the night in an old-fashioned castle. Scooby and Shaggy can't wait to get medieval. They even dress up as knights in shining armor. But when the two buddies hear there's a vampire haunting the place, they decide they'd rather flee than fight! Can Fred, Velma, and Daphne stake the vamp and save their friends?