This document provides background information on Arthur Conan Doyle and summarizes the last chapter of his novel The Hound of the Baskervilles. Conan Doyle was born in 1859 in Ireland and studied medicine before becoming a full-time writer, developing the character of Sherlock Holmes. The last chapter summarizes the novel, in which Sherlock Holmes investigates the death of a member of the Baskerville family in Dartmoor, England. It is revealed that a neighbor named Stapleton, who aims to inherit the Baskerville estate, is behind the attacks using a giant hound. Stapleton's true identity as the son of the younger Baskerville brother is also uncovered.