• 
  William Cameron Menzies

  regizor

• 
  Edgar Barrier

  Dr. Edward Keller
• 
  Raymond Burr

  Steve Loomis
• 
  G. Pat Collins

  Nelson, Peterson's Gate Guard
• 
  Frank Darien

  Luther Adams
• 
  Robert Foulk

  Paznic
• 
  Elliott Reid

  Matt Corbin
• 
  Eddie Borden

  Medical Experimentation Patient

• 
  Lewis Martin

  Peterson
• 
  Gregory Gaye

  Sweitart
• 
  Frank Wilcox

  Bradford, Magazine Editor
• 
  Peter Brocco

  Nate Garr
• 
  Billy Nelson

  Ed--Delivery Man
• 
  Tom Greenway

  agent FBI
• 
  Douglas Evans

  Carstairs

• 
  Stanley Blystone

  Guard on Pier
• 
  Olive Carey

  Mabel Turner

• 
  Carroll Clark

  art director
• 
  Albert S. D'Agostino

  art director
• 
  Nicholas Musuraca

  imagine
• 
  Paul Sawtell

  departament sunet
• 
  C. Bakaleinikoff

  music department
• 
  Lewis J. Rachmil

  producător
• 
  Howard Hughes

  producător
• 
  William Cameron Menzies

  design de producţie
• 
  Darrell Silvera

  set decorator
• 
  Clem Portman

  sound department
• 
  George Bricker

  scriitor
• 
  Stanley Rubin

  scriitor