A gambler just out of wartime military service, no longer interested in wagers and speculations, wants only to open up a mountain vacation lodge. Before this can take place, he is framed for murder, and forced to hide out in the home of a girl. With the help of the girl and a policeman friend, he searches for the real murderer. Watch carefully in Undertow and you’ll spot new Universal contractee „Roc” Hudson as a plainclothes detective.