Homes and Watson are trapped in a mansion with engineer Henrietta Prince , after being lured there by an ingenious mechanical music box. Can you escape in time to save Prince’s replica of Babbage's Analytical Engine  Combine the excitement of an escape room with the famous pair of Sherlock Holmes and Doctor Watson and you’ve got an escape room book in which you are Sherlock Holmes. This unique puzzle book includes codes, riddles and red herrings, plus a Hieroglyphic Code Wheel set into the cover.