Amazon.com description: Product Description: The 1915 novel by Arthur Conan Doyle is the final novel based on the character of detective Sherlock Holmes. Right after receiving information form one his insiders Fred Porlock, working in criminal mastermind Professor Moriarty’s gang, Sherlock receives news of the death of the same person that Porlock had warned would be attacked. Sherlock and Watson head off to Birlstone Manor House where the scene of the crime and the condition of the body initially imply that the death had actually been a suicide. Closer inspection reveals clues that help Holmes and other investigators deduce murder. Sherlock suspects a guest, Cecil Barker, and the wife of the victim of lying and possibly perpetrating the crime. As Sherlock and others search for more clues to lead to the criminal, surprising facts emerge that throw new light on the murder and increase Sherlock’s belief of Moriarty’s hand in this international crime trail.