Grant Williams
as Scott Carey

Randy Stuart
as Louise Carey

April Kent
as Clarice Bruce

Paul Langton
as Charlie Carey

Raymond Bailey
as Doctor Thomas Silver

William Schallert
as Doctor Arthur Bramson

Frank J. Scannell
as Barker

Helene Marshall
as Nurse

Diana Darrin
as Nurse

Billy Curtis
as Midget

Charles Perry
as Spieler (uncredited)

Chet Brandenburg
as Balloon Vendor (uncredited)

John Hiestand
as KIRL TV Newscaster (uncredited)

Joe LaBarba
as Joe (uncredited)

Perk Lazelle
as Doctor (uncredited)

Lock Martin
as Giant (uncredited)

Regis Parton
as Minor Role (uncredited)

Luce Potter
as Violet (uncredited)