Scooby-Doo is an 'Ameri-canine' icon, the most beloved cartoon pooch of the past three generations. The snack-sniffling sleuth and his pals are in the midst of a huge popularity and awareness upswing. The Picture Clue books are based on the traditional "rebus Reader". Scooby-Doo and Shaggy are all alone on a dark and stormy night. They think there's a monster in the house, but it looks more like a mystery!