Robert Donat, Madeleine Carroll. An innocent man is pursued by both police and enemy spies while trying to learn the secret of the "39 Steps" in this remastered noir masterpiece. Directed by Alfred Hitchcock. Includes a new hi-def digital restoration, audio commentary by Hitchcock scholar Marian Keane, complete broadcast of the 1937 Lux Radio Theatre adaptation with Ida Lupino and Robert Montgomery, audio excerpts from François Truffaut’s 1962 interviews with Hitchcock, an essay by film critic David Cairns and more. 1935/b&w/86 min/NR/fullscreen.