The world's most famous detective. The most brilliant mind in fiction. But before he became the great detective, who was young Sherlock Holmes? The fourth book in a series of mystery adventures featuring a teenage Sherlock and endorsed by the Conan Doyle Estate, now with a new cover look.

Andrew Lane is an author, journalist and lifelong Sherlock Holmes fan. This is his first series for young adults. He lives in Hampshire with his wife and son. Andrew's passion for the original novels of Sir Arthur Conan Doyle and his determination to create an authentic teenage Sherlock Holmes made him the perfect choice to work with the Conan Doyle Estate to reinvent the world's most famous detective in this new series.