In Director Sir Alfred Hitchcock's first talking movie (which actually started out as a silent movie, but switched to a talkie part way through filming) a young woman, Alice White, finds herself being blackmailed after killing a man in self defense. To complicate matters further, the hard-working policeman investigating the death is her boyfriend Frank Webber. Frank soon learns that Alice is responsible, but sets out to prove her innocent of murder, and stop the blackmailer.—garykmcd