A weekend party ends in the murder of its wealthy host, Stephen Kester (Claude Gillingwater). Police suspect his daughter (Shirley Grey), whose fiancé Kester detested, but mystery writer Bill Tracy (Charles Starrett) thinks Kester's business partner, Roger Hall (Arthur Clayton), had a greater motive. Even when Hall is found dead with a suicide note confessing to the murder, Tracy still believes the case is far from solved.