I noticed here a nice technique when through the window of the room, where something is happening, you can see the street, usually the wall of another house or houses. This creates a very deep composition of the frame, additional space appears in the room, and the director can put some extra information there. This has already been in several Preminger films, and it is here too.
It's almost perfect film noir, only slightly inferior to Laura. The plot is about a policeman, not a private detective, but there are a lot of important noir elements, except perhaps the femme fatale.
11 out of 12