An illustrated adaptation of Sir Arthur Conan Doyle's classic Sherlock Holmes mystery – at an easy-to-read level for readers of all ages! Also includes a QR code for the free audiobook! 'Am at Goldini's Restaurant, Gloucester Road, Kensington. Please come at once. Bring a jemmy, a lantern, a chisel, and a gun.' S.H. The secret plans for a submarine super-weapon have been stolen and it's up to Sherlock Holmes to find them. But with the government, the military and even his own brother turning up the pressure, can Sherlock unravel the web of secrets, spies and cunning crimes before it's too late?