The film was the first Hitchcock film to have nudity (with the arguable exception of the shower scene in "Psycho"). There are a number of classic Hitchcock set pieces in the film, particularly the long tracking shot down the stairs when Babs is murdered. The camera moves down the stairs, out of the doorway (with a rather clever edit just after the camera exits the door which marks where the scene moves from the studio to the location footage) and across the street, where the usual activity in the market district goes on with patrons unaware that a murder is occurring in the building. A second sequence set in the back of a delivery truck full of potatoes increases the suspense, as the murderer Rusk attempts to retrieve his tie pin from the corpse of Babs. Rusk struggles with the hand and has to break the fingers of the corpse in order to retrieve his tie pin and try to escape unseen from the truck.