search for the name of a film

Hello,

I'm looking for the title of a film using an image taken from the film. 

In this image, there are two characters : one is lying on a sloping surface, perhaps covered in snow.  The other is leaning over him. He is threatening him with a gun. The film is in black and white. It is a scene of suspense. Without doubt a classic film noir. 

I can send an image of the scene. 

thank you very much 
Kind regards.