Richard Hannay (Robert Donat) is a Canadian rancher on vacation in London who sees a vaudeville act at the Palladium in which Mr. Memory (Wylie Watson) draws on his photographic memory to answer questions posed by the audience. When a shot rings out in the theater a frightened young woman approaches Hannay and asks for his help. The woman claims that foreign spies who plan to smuggle valuable military secrets out of the country are after her, and when she herself is later killed, Hannay finds himself both framed as the man responsible for her death as well as the next potential victim of the spy ring. Traversing through rural Scotland, on the run from both the police and the spies, Hannay finds himself attached to a cool but reluctant blonde, and together they have to figure out the meaning of the woman's last words and bring down the spy ring before the precious military secrets are smuggled abroad. THE THIRTY NINE STEPS is the film that established Hitchcock as the master of the mystery spy-thriller.
''If you can imagine Anatole France writing a detective story you will have some notion of the artistry that Hitchcock brings to this screen version of John Buchan's novel… Hitchcock describes the remarkable chain of events in Hannay's flight across England and Scotland with a blend of unexpected comedy and breathless terror that is strikingly effective.''
---THE NEW YORK TIMES