The Mystery of the 13th Guest
Marie Morgan
Johnny Smith
Police Lt. Burke
Speed Dugan
Harold Morgan (as John Duncan)
Tom Jackson (adult)
District Attorney
Marjory Morgan (adult)
Barksdale
Uncle Adam
Grandfather Morgan
Harold (child)
Marie (child)
Mike - Police Desk Sergeant (uncredited)
Carter (uncredited)
Uncle John (uncredited)
Dr. Sherwood - Plastic Surgeon (uncredited)
Photographer (uncredited)
Joe the Valet (uncredited)
Police Coroner (uncredited)
Uncle Wayne (uncredited)
Cop (uncredited)
