New York police detective Roderick Moran interrupts the wedding of counterfeitor Tony Brachieri with a warrant for the notorious criminal's arrest. As Tony is being locked up, he swears that he will exact vengeance when Roderick marries. Roderick later proposes to the mysterious but beautiful Laura Bowers, and although he is jittery before the wedding, his fears are quelled by the news that Tony has been killed in an attempted prison break. Soon after the newlyweds move into their cottage, however, Roderick is nearly killed by a shot fired through the window. The police are baffled when they find only Tony's fingerprint on the sill. After Roderick's recovery, he learns that Laura, actually a Secret Service agent, has tracked down the culprit: Tony's wife, the Calabrian Kid, who had sworn to her husband on their fateful wedding day that she would obtain revenge.