The Adventure of the Naval Treaty (Unabridged‪)‬

Holmes must recover a stolen document, prevent a diplomatic crisis between England and Italy, and save the career of a young and rising diplomat. "The Adventure of the Naval Treaty", one of the 56 Sherlock Holmes short stories written by Sir Arthur Conan Doyle, is one of 12 stories in the cycle collected as The Memoirs of Sherlock Holmes. It is one of the longest stories in the Sherlock Holmes collections.