Ex-private eye Shannon works his way into New York mob operations, reporting his findings to the District Attorney's office through Asst. D. A. Bonacorsi.

Vera Ralston plays Joan Milna, who shares several thousand acres of valuable Montana timberland with her stepfather (John Alderson). Coveting Joan's property, lumber baron Eric Warren (Ray Collins) sends out his foreman Boyd Caldwell (Rod Cameron) to persuade her to sell. Instead, Caldwell falls in love with the girl, vowing to protect her trees from the eco-unfriendly Warren. Republic's wide-screen Naturama process is shown to good advantage throughout Spoilers of the Forest.

A sailor who is a champion boxer in the Navy is forced to leave the service because his family's business, a tuna fishing operation, is in financial trouble. He becomes a prizefighter and one day signs up for a winner-take-all boxing match, which could make him a lot of money but could also result in the end of his boxing career.

Ervin Plummer-played by the estimable George Macready, who like his good friend Vincent Price was a man of culture and erudition who specialised in bad guy roles-is a grasping avaricious businessman with a hunger for gold.