• 
  John Frankenheimer

  regizor

• 
  Elmore Leonard

  scenarist

• 
  Roy Scheider

  Harry Mitchell
• 
  Ann-Margret

  Barbara Mitchell
• 
  John Glover

  Alan Raimy
• 
  Debra Berger

  O'Boyle's Wife
• 
  Kelly Preston

  Cini
• 
  Robert Trebor

  Leo Franks

• 
  Frank Sivero

  Vendor
• 
  Blackie Dammett

  Drug Dealer
• 
  Clarence Williams III

  Bobby Shy
• 
  William John Murphy

  Grady
• 
  Vanity

  Doreen
• 
  Doug McClure

  Mark Arveson
• 
  Ron Jeremy

  Party Goer (as Ron Jeremy Hyatt)

• 
  Tom Tryon

  Party Goer
• 
  Philip Bartko

  Test Site Worker
• 
  Lonny Chapman

  Jim O'Boyle
• 
  Herschel Savage

  Party Goer (as Harvey Cowen)
• 
  Alex Henteloff

  Dan Lowenthal
• 
  Michelle Walker

  Counter Girl