Are you a detective? Get on the case with Sherlock Holmes and Dr. Watson to solve an impossible mystery. See if you can figure out how Holmes pulls the facts together so quickly. Clues at the back of the book will reveal his process of reasoning and how he solved the crime.What is the secret behind a letter that shocks a man to death? Holmes was not always a famous detective. In Holmes's very first case, a simple letter shocked a man to death. Holmes explains to Watson how a voyage upon a ship called the Gloria Scott tortured a man for the rest of his life.