Sherlock Holmes is approached by Mr. Scott-Eccles who recounts strange events. He recently dined with an acquaintance, a Spanish gentleman named Diaz with whom he shared an interest in map making. He spent the night at Mr. Diaz' rented home, Wisteria Lodge, but awoke the next morning to find the house abandoned. Thinking that Diaz might be doing a runner, he contacted the landl...
Miss Mary Morstan contacts Sherlock Holmes for his help regarding her father, captain Morstan, who disappeared 10 years ago. Since his disappearance she annually receives a valuable pearl by post from an unknown person. The mystery leads Holmes and doctor Watson into an intricate plot regarding a lost treasure belonging to four convicts on the Andaman Islands