From the strange case of 'The Red-Headed League' to the extraordinary tale of 'The Engineer's Thumb', Sherlock Holmes and his assistant Dr Watson grapple with treachery, murder, and ingenious crimes of all kinds. But no case is too challenging for the immortal detective's unique power of deduction. Written by Sir Arthur Conan Doyle. Puffin Classic edition- complete and unabridged . Paperback. Suggested ages 10 and up.