• 
  Charles Cane

  Chief Inspector Ryan
• 
  Ian Keith

  Ormond Murks
• 
  Wilton Graff

  Dr. Lucifer Garland
• 
  Lorna Gray

  Nurse Susan Drake
• 
  LeRoy Mason

  Detective Hendricks
• 
  William Haade

  Police Officer 'Tiny'
• 
  Charles Trowbridge

  Dr. Rufus Maynard

• 
  Hilyard M. Brown

  art director

• 
  Reggie Lanning

  imagine
• 
  Edward H. Plumb

  departament sunet
• 
  Adele Palmer

  costume and wardrobe departmen
• 
  John McCarthy Jr.

  set decorator
• 
  Howard Lydecker

  special effects