He Walked by Night (1948)
Low budget B&W semi-documentary style crime thriller, which is loosely based on the real-life crimes committed by Erwin Walker in 1946. Featuring an early appearance by Jack Webb before he went on to create the 'Dragnet' radio show and TV series which is also loosely based on real-life crimes. The story was fairly close to the actual events but after looking up Erwin Walker in Wikipedia, the full story of his criminal activities would've made for a far more interesting script. I guess there's only so much that can be crammed into a movie with a running time of 80 minutes, though.