When the Feds spot high-grade counterfeit cash, they seek the help of convict Tris Stewart (Lloyd Bridges) in tracking down the manufacturers. Stewart's hands-on experience in counterfeiting makes him a vital asset, but turning him into an informant won't be easy. As soon as Stewart is let loose to investigate, he makes a run for it, reuniting with his criminal cohorts and girlfriend Meg (Barbara Payton). Little does he know that the law is watching him every step of the way.