Edward G. Robinson is the war crimes investigator on the relentless hunt for the fugitive Nazi who masterminded the Final Solution. He arranges for the one man who knows his face to escape imprisonment, and follows him to a small Connecticut town. There he loses his quarry, but evidence soon points to Orson Welles, who, under the identity of Charles Rankin, is now a college professor and new husband to Loretta Young. Welles stops at nothing, including murder, to protect his secret, but little by little Young is forced to realize who her husband really is.

Left alone when his family leaves town to visit relatives, professor Edward G. Robinson hangs out at his club with his two cronies, one of whom is DA Raymond Massey. He is fascinated by a striking portrait of a young woman, and one night, leaving the club late and alone, he runs into the portrait’s model (Joan Bennett). Though he knows better, he accompanies her back to her apartment. A jealous lover bursts in and attacks Robinson, who murders him in self-defense. Panicked by the situation, Bennett and Robinson cover up the event, but both the authorities and a blackmailer circle closer and closer.