• 
  Robert Fuest

  regizor

• 
  Hugh Griffith

  Professor Hira
• 
  Sterling Hayden

  Maj. Wrongway Lindbergh
• 
  Julie Ege

  dra. Dazzle
• 
  George Coulouris

  Dr. Powys
• 
  Jenny Runacre

  Miss Brunner
• 
  Graham Crowden

  Dr. Smiles
• 
  Patrick Magee

  Dr. Baxter

• 
  Harry Andrews

  John
• 
  Jon Finch

  Jerry Cornelius
• 
  Basil Henson

  Dr. Lucas
• 
  Ronald Lacey

  Shades
• 
  Sarah Douglas

  Catherine
• 
  Sandra Dickinson

  Waitress
• 
  Mary MacLeod

  Nurse

• 
  Gilles Millinaire

  Dimitri
• 
  Derrick O'Connor

  Frank
• 
  Sandy Ratcliff

  Jenny (as Sandy Ratcliffe)

• 
  David Puttnam

  producător
• 
  John Goldstone

  producător
• 
  Sanford Lieberson

  producător
• 
  Samuel Z. Arkoff

  producător
• 
  Roger Corman

  producător
• 
  Robert Fuest

  design de producţie
• 
  Bill Rowe

  sound department
• 
  Brian Simmons

  sound department
• 
  Robert Fuest

  scriitor