Pierre the Maze Detective has a new case. Mr. X has stolen the Maze Stone, which has the power to turn the whole of Opera City into a maze. Can you help Pierre and his friend Carmen find their way through the mazes - and stop Mr. X before it's too late? This beautifully illustrated book features 15 full-spread illustrations of intricate, magical mazes. Take a trip through a fantastic world of underground cities, hot-air balloons, tree-top towns, and haunted houses. Trace your way through each maze, spot the clues, and solve the extra mystery challenges along the way. Hours of puzzle fun, for all maze detectives aged 8+. A page of answers with the routes through the mazes and other solutions is included at the end of the book.