Waterfront at Midnight (1948)
Hoping to put the cuffs on criminal mastermind Socks Barstow, detective Mike Hanrohan is stymied by the fact that his younger brother Denny has joined Barstow's gang. Things get worse after a bloody shootout, in which Mike apparently guns down his own brother.
Directed by: William Berke
Starring: William Gargan, Mary Beth Hughes, Richard Travis, Richard Crane, Cheryl Walker, Horace McMahon
Links: IMDb, Movie posters, Movie stills