Maltese camera angle
There is this one scene among many other gorgeous shots that I found particularly interesting. I have done a sketch of it above. Though over-the-shoulder sots are often used in film noir I found the use of the foreground character's (Boghart) body cutting across the frame to enclose the background character (Mary Aster) intriguing.
To setup the shot, Boghart was first sitting back against the couch then leaned forward putting his elbows on his knees in a very natural action.
I love finding places where through natural action or gestures you can find anew camera angle or acting on a character.