• 
  Christy Cabanne

  regizor

• 
  Walter Abbott

  scenarist

• 
  Bela Lugosi

  Prof. Leonide
• 
  George Zucco

  Dr. Josef Van Ee
• 
  Nat Pendleton

  Bill 'Bull' Raymond
• 
  Dorothy Christy

  Mrs. Williams
• 
  Joyce Compton

  Jane Cornell
• 
  Stanley Andrews

  Pathologist

• 
  Douglas Fowley

  Terry Lee
• 
  Angelo Rossitto

  Indigo
• 
  Stanley Price

  Intern