The Sign of Four
From the reminiscences of John H. Watson, M.D.
by Sir Arthur Conan Doyle

"Following his successful resolution of the case of A Study in Scarlet, London's most ingenious detective is consulted by Mary Morstan, a young woman whose father had vanished years before. Since his disappearance, an unknown benefactor has been sending her a valuable pearl each year. Having received a note from the mysterious personage asking to meet her that evening, she invites Holmes and Watson to accompany her to the rendezvous. It soon becomes apparent that the disappearance of Ms. Morstan's father is somehow related to his military service in the Andaman Islands, a penal colony located between India and Burma."

"The second of Arthur Conan Doyle’s remarkable novels featuring Sherlock Holmes, “The Sign of the Four” is a fascinating tale of complex events, brilliantly unraveled by the great detective. This is the novel in which Holmes makes the much quoted statement that guided so many of his deductive leaps, “How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?” If you like mystery stories you must have read this book and if you haven’t you are in for a great delight."