The Mystery of the 13th Guest

Helen Parrish

Marie Morgan

Dick Purcell

Johnny Smith

Tim Ryan

Police Lt. Burke

Frank Faylen

Speed Dugan

Johnny Duncan

Harold Morgan (as John Duncan)

John Dawson

Tom Jackson (adult)

Addison Richards

District Attorney

Jacqueline Dalya

Marjory Morgan (adult)

Cyril Ring

Barksdale

Paul McVey

Uncle Adam

Lloyd Ingraham

Grandfather Morgan

Robert J. Anderson

Harold (child)