The Glass Key is a 1942 American crime drama FILM NOlR based on the novel of the same name by Dashiell Hammett. The picture was directed by Stuart Heisler and stars Brian Donlevy, Veronica Lake and Alan Ladd (who plays the actual lead despite being billed third). A successful earlier film version starring George Raft in Ladd's role had been released in 1935. The 1942 version’s supporting cast features William Bendix, Bonita Granville, Richard Denning and Joseph Calleia.
You can find out more about this movie from Wikipedia. A detailed article from online blog Film Noir Board may still be available.