Book excerpt: 'Scooby-Doo - The Essential Guide' is a must-have reference for all Scooby fans. This guide is packed full of facts about the gang - their scariest adventures, their creepiest moments, and their deepest secrets. Find out what it's like inside a haunted house, just who is in the Doo family tree, and what exactly the gang keep inside the Mystery Machine. A spine-tingling combination of specially-commissioned artworks, stills from the original episodes and live-action movies, plus classic images of the gang make this a unique insight into the wacky world of everyone's favourite dog dectective.