The Adventure of the Naval Treaty is a short Sherlock Holmes story penned by Sir Arthur Conan Doyle. Conan'Doyle. in this story. has'the world famous consulting detective delving into the world of international espionage for Holmes Is tasked with securing the return of a vital Naval TreatyThe case sees Sherlock Holmes dealing with high political and international intrigue but at the same time Holmes is arguably more worried about the reputation of the individual. for the honesty of his client. Percy Phelps is being questioned.