• 
  Michael Crichton

  regizor

• 
  Michael Crichton

  scenarist

• 
  James Coburn

  John Reston
• 
  Albert Finney

  Dr. Larry Roberts
• 
  Leigh Taylor-Young

  Jennifer Long
• 
  Vanna White

  Reston Girl
• 
  Randi Brooks

  Girl in Bikini
• 
  Pamela Bryant

  Reston Girl

• 
  John Sanderford

  D.M.I. Policeman
• 
  Arthur Taxier

  D.M.I. Truck Technician
• 
  Terry Kiser

  Commercial Director
• 
  Dorian Harewood

  Lieutenant Masters
• 
  Katherine De Hetre

  Mother
• 
  Susan Dey

  Cindy Fairmont
• 
  Kim Johnson

  Reston Girl

• 
  Jerry Douglas

  Laxative Spokesman
• 
  Donna Kei Benz

  Ellen (as Donna Benz)
• 
  Ashley Cox

  Candy
• 
  Michael Hawkins

  Senator Robert Harrison (as Michael Gainsborough)
• 
  Darryl Hickman

  Dr. Jim Belfield
• 
  Georgann Johnson

  Cindy's Mother
• 
  Catherine Parks

  Jan
• 
  Tim Rossovich

  Moustache Man
• 
  Terri Welles

  Lisa Convey
• 
  Kathryn Witt

  Tina Cassidy