Solving the Mystery in Doyle's The Hound of the Baskervilles
Sherlock Holmes deduced what was really going on by noting the failure of a dog to bark - thus identifying his master and therefore the murderer in The Hound of the Baskervilles, by Arthur Conan Doyle. Deductive reasoning involves reasoning in which you go from general to specific instances, by using known facts and eliminating improbable situations, and unlikely suspects.
By sending Dr. Watson separately from himself, and going to Baskerville Hall in secret, Holmes is able to get two different viewpoints of the situation there, and then later exchange opinions and information with his partner. Watson is at first suspicious of Mr. and Mrs. Barrymore. He hears Mrs. Barrymore sobbing at nights, which puzzles him. One night while Watson and Sir Henry were in the Hall, they observed Mr. Barrymore sending signals through a window using a candle. After extensive questioning Mr. Barrymore and his wife reveal that recently escaped “Notting Hill Criminal” is really Mrs. Barrymore’s brother, Seldon, who has been living out in the moor since he escaped from prison, and Mr. Barrymore has been taking him food during the night.
Watson discovers the burned remnants of a letter written to Sir Charles Baskerville, the uncle of Sir Henry, prior to his death; written by Miss Laura Lyons, from Coombe Tracey. She knew Sir Charles through Stapleton, and had written the letter asking Sir Charles to finance her divorce from her husband because she thought Sir Charles would be willing to help her since he was a nice person. Their meeting was to be at Yew Alley in front of the gate at around 2am, which of course never occurred,...