"The Adventure of the Gloria Scott", one of the 56 Sherlock Holmes short stories written by British author Sir Arthur Conan Doyle, is one of 12 stories in the cycle collected as The Memoirs of Sherlock Holmes. It is chronologically the earliest case in Sherlock Holmes canon. This story is related mainly by Holmes rather than Watson, and is the first case to which Holmes applied his powers of deduction, having treated it as a mere hobby until this time. This is one of the two Sherlock Holmes stories in which a protagonist is haunted by an old acquaintance for an old crime. The other is The Boscombe Valley Mystery.