Reparto (por orden de créditos)
Helen Francis
Madame Bartlett, Biologist
Edward José
Paul Chilton, Madame Bartlett's Secretary
Ruby Hoffman
Vera, Madame Bartlett's Assistant
Creighton Hale
Walter, Madame Bartlett's Son
Louis Hendricks
Senator Bristow
Sam J. Ryan
Warden Turner
M.O. Penn
Secret Service Agent
