July 31, 1935 –
The British spy thriller, The 39 Steps, directed by Alfred Hitchcock, and starring Robert Donat, and Madeleine Carroll, was released on this date. Alfred Hitchcock regarded this as one of his favorite movies.
Before filming the scene where Hannay (Robert Donat) and Pamela (Madeleine Carroll) run through the countryside, Alfred Hitchcock handcuffed them together and pretended for several hours to have lost the key in order to put them in the right frame of mind for such a situation.
The Haus of Dcaligari 