Invisible Stripes is (1939) starring George Raft, Humphrey Bogart, Jane Bryan and William Holden, is one of those great 1930s movies that lays down some of the rails upon which film noir would soon enough run.
If it's a crime film, if it's a prison film, or if it's a heist film, the chances are that in the Golden Age of the silver screen, this movie may be presented with all the tropes, style and wisdom of film noir.
It's often true, but it also ain't necessarily so. Nobody rushes to call the Falcon films, or the Basil Rathbone Sherlock Holmes films film noir ... and yet they deal in crime, conspiracy, and often in the shadows and fog.
The prefiguring of film noir is still quite evident in 1930s cinema. To find it, one can trace the morality of the crimes, cops, robbers, murderers and increasingly, the psychopaths and the teenage tearaways.
Film noir prefiguring aside, Invisible Stripes, directed by Lloyd Bacon is a lot of fun, and acts out that fine 1930s theme of the kids on the street battling with the urge to turn to crime. It's in this environment, that director Lloyd Bacon brings home a few new ideas, including that of the teenage tearaway.
And that tearaway, is committing a certain form of crime, against both the combined moral wealth of the family, and society itself.