• 
  William Beaudine

  regizor

• 
  Barney A. Sarecky

  scenarist

• 
  Bela Lugosi

  Dr. James Brewster
• 
  Louise Currie

  Billie Mason
• 
  Wallace Ford

  Jeff Carter
• 
  Henry Hall

  Dr. George Randall
• 
  Minerva Urecal

  Agatha Brewster
• 
  Emil Van Horn

  Maimuta

• 
  J. Farrell MacDonald

  Police Capt. O'Brien
• 
  Wheeler Oakman

  Det. Brady
• 
  Ralph Littlefield

  Zippo
• 
  George Kirby

  Detective #1
• 
  Charlie Hall

  Barney (the photographer)

• 
  Jack Dietz

  producător
• 
  Sam Katzman

  producător

• 
  Mack Stengler

  imagine
• 
  Carl Pierson

  montaj
• 
  Karl Brown

  o poveste de