X Marks the Spot (1942)

In 1942, rubber is a valuable commodity during WWII. Eddie Delaney is a second lieutenant in the Army, but also a private detective. Eddie swings into action, when his father, police-sergeant Timothy J. Delaney, is gunned down by rubber racketeers. With the help of his brave friend and radio disc-jockey Linda Ward and police-lieutenant William 'Bill' Decker, Eddie goes after the racketeers. During their search, Eddie, Linda, and Bill must deal with various criminals, like Marty Clark and unscrupulous businessman John J. Underwood, who owns the nightclub "The One Spot."