The Sign of the Four
by Arthur Conan Doyle
When a British woman receives mysterious pearl gifts and a letter promising to right the wrongs done to her, Sherlock invites Holmes and Dr. Watson to investigate. Who sends a rare and priceless pearl to the beautiful Mrs. Morstan every year? Holmes and Watson go after Native American treasures and murders whose ominous trademark is the "mark of four." In this novel, Holmes' second novel, the great detective comes to life as a melancholic and incomprehensible master of deduction.
