Every mystery has an explanation, and detective Sherlock Holmes and Dr. Watson are sure to explain why a supernatural black hound seems to be plaguing the Baskerville family. The recent death of Sir Charles Baskerville has renewed the family's fear in the beast. Using his quintessential blend of observation and deduction, Holmes—with the help of Watson—untangles a knot of suspects including an escaped convict, a mysterious woman, and the killer hound to solve the mystery. This is an unabridged version of Sir Arthur Conan Doyle's most popular Sherlock Holmes crime novel, which the Scottish author first published in the UK in 1902.