Alfred Hitchcock filmed one of his usual cameos, standing in a restaurant as Manny sits, but decided on using a narrated prologue instead.
According to the book "It's Only a Movie", Alfred Hitchcock asked John Michael Hayes to work on the treatment and screenplay of this film for no salary but for a percentage of the profits. Hayes declined, and their four-picture relationship ended.
Although based on a true story, Alfred Hitchcock deliberately left out some of the information that pointed to Manny's innocence to heighten the tension.
On the DVD, the running commentary revealed that when the crew went to film the scenes at the country hotel, Alfred Hitchcock stayed in his limo due to the cold outside and decided to move the production to Hollywood to complete the film.
The Victor Moore Arcade was torn down in the late 1990s as part of a project to build a new transport hub.
Visa d'exploitation en France # 19275.
When Manny (Henry Fonda) is taken to prison was filmed in a real prison...as he is led to his cell , you can hear one of the inmates shout, "What'd they get ya for, Henry?" and several of the other prisoners laughing.
Alfred Hitchcock:
narrating the film's prologue. The only time he actually spoke in any of his films.