Collects the first seven Usborne Puzzle Adventures. Each mystery is designed for children 8-13 years old, with clues to solve on each page from logic tests to code-cracking, adding up to one colourful, exciting mystery. Collecting: Escape from Blood Castle, The Curse of the Lost Idol, Murder on the Midnight Plane, The Incredible Dinosaur Expedition, The Intergalactic Bus Trip, Time Train to Ancient Rome, Danger at Demon’s Cove.