Scooby Doo Picture Clue BookSpy Hunt Author:Maria S. Barbo Scooby Doo and Shaggy are playing spies. But now there is a real mystery. Where is Daphne? Can they solve this case? And will some one give them scooby snacks? scooby Doo picture clue books use pictures t ohelp tell the story. The flash cards at the end of the book help you learn new words.