1930s mystery thriller starring Ginger Rogers. Thirteen years ago Marie Morgan (Rogers)'s father held a dinner party at which he died. She discovers he has bequeathed the majority of his estate to an elusive 13th guest who never showed up on that night and who no one seems to know. Now the other twelve guests are being killed off one by one by a mysterious hooded figure. Marie and detective Phil Winston (Lyle Talbot) try to solve the case before the killer strikes again.