Bordertown (1935)

Embittered when prejudice cuts short his nascent law career, once-idealistic Johnny Ramirez leaves his home in Los Angeles and ends up in Mexico. He quickly becomes the invaluable second-in-command to Charlie Roark, the owner of a border-town casino. But Roark's wife falls hard for Johnny and goes to great lengths to make him hers, which sets in motion more perilous events.