Bill Haven
Jed Barlow
Marshall Forrest
Uncle Willis Reynolds
Stanley Kael (uncredited)
Hamilton Gregory
Fred Gibson
George Dickman
Brennan (uncredited)
Chuck Lee
Maj. Harry Bratton
Função desconhecida
Dr. Stevens (as Michael Dunne)
Owen Talbot
Bob Sanders
Prof. Stewart
Steve Carter
Professor Edward 'Ed' Bland
Roy Bivins
Tom Wilson
Self - Host
Jack Wentworth
Mike Brannagan
The Young Man
Jeff Anderson
Tim Tyler
Peter Hollingshead
Announcer
