Charles Coburn

as Samuel Fulton / John Smith

Piper Laurie

as Millicent Blaisdell

Rock Hudson

as Dan Stebbins

Gigi Perreau

as Roberta Blaisdell

Lynn Bari

as Harriet Blaisdell

Larry Gates

as Charles Blaisdell

William Reynolds

as Howard Blaisdell

Skip Homeier

as Carl Pennock

Paul Harvey

as Judge Wilkins

Paul McVey

as Lester Pennock

Gloria Holden

as Clarissa Pennock

Frank Ferguson

as Edward Norton

Forrest Lewis

as Martin Quinn

James Dean

as Youth at Soda Fountain (uncredited)

James Anderson

as Chauffeur (uncredited)

Paul Bryar

as Doorman at Poker Game (uncredited)

Gino Corrado

as Peanut Vendor (uncredited)

William Fawcett

as Caretaker (uncredited)

Fritz Feld

as Alvarez (uncredited)

Dick Gordon

as Party Guest (uncredited)

Forbes Murray

as Party Guest (uncredited)

Charles Sherlock

as Party Guest (uncredited)

Edna Holland

as Seamstress (uncredited)

Philo McCullough

as Mr. Benson (uncredited)

Jack Mower

as Court Clerk (uncredited)

Spec O'Donnell

as Candy Seller (uncredited)

Emory Parnell

as Policeman (uncredited)

Barney Phillips

as Workman (uncredited)

Helen Wallace

as Shirley White (uncredited)

Willard Waterman

as Dr. Wallace (uncredited)

Lyn Wilde

as Charleston Dancer (uncredited)