• 
  Michael Crichton

  regizor

• 
  Michael Crichton

  scenarist

• 
  Geneviève Bujold

  Dr. Susan Wheeler
• 
  Michael Douglas

  dr. Mark Bellows
• 
  Richard Widmark

  Dr. Harris
• 
  Hari Rhodes

  Dr. Morelind
• 
  Lance LeGault

  Vince
• 
  Gary Bisig

• 
  Michael MacRae
• 
  Gary Barton

  tehnician
• 
  Lois Chiles

  Nancy Greenly
• 
  Maury Cooper
• 
  Charles Siebert

  Dr. Goodman
• 
  Harry Basch
• 
  Betty McGuire

  asistentă

• 
  Alan Haufrect

  Dr. Marcus
• 
  Rip Torn

  Dr. George
• 
  Ernest Anderson
• 
  Dick Balduzzi
• 
  Joni Palmer

  instructor de dans
• 
  Richard Doyle

  Jim
• 
  Kay Cole

  Sally
• 
  Tom Borut

  Dr. Cowans
• 
  Kurt Andon
• 
  David Hollander

  Jimmy
• 
  Philip G. Brooks

  Dr. Richards
• 
  Tom Selleck

  Sean Murphy
• 
  Benny Rubin

  Mr. Schwartz
• 
  William Wintersole
• 
  Frank Downing

  Kelly
• 
  Joanna Kerns

  Diane
• 
  Elizabeth Ashley

  dna. Emerson
• 
  Ed Harris
• 
  Amentha Dymally

  Nurse
• 
  Jeffrey Corazzini

  Patient
• 
  Gerald Berns

  Gardian
• 
  Sue Bugden

  Nurse

• 
  Martin Erlichman

  producător
• 
  Victor J. Kemper

  imagine
• 
  David Bretherton

  montaj
• 
  Jerry Goldsmith

  coloană sonoră
• 
  Albert Brenner

  design de producţie
• 
  Rick Simpson

  decoruri