• 
  Dick Van Dyke

  Dr. Mark Sloan
• 
  Peter Outerbridge

  Barry Donovan
• 
  Barry Van Dyke

  Steve Sloan
• 
  Adrien Dorval

  Biker #1
• 
  Stephen Dimopoulos

  Crawford
• 
  William B. Davis

  Marvin Parkins
• 
  Cynthia Gibb

  Dr. Amanda Bentley
• 
  Ken Kercheval

  Frank Stevens

• 
  Shane Meier

  Paul McKinney
• 
  Michael MacRae

  Mr. Foss, Jack's Father
• 
  Gillian Barber

  Susan Blankenship
• 
  Bill Bixby

  Nick Osborne
• 
  Brynn Thayer

  Anita Clifford
• 
  Barry Greene

  Biker #2
• 
  Mariette Hartley

  Kate Hamilton

• 
  Stephen Caffrey

  Dr. Jack Parker
• 
  Vernee Watson

  Esther Wiggins
• 
  John Novak

  Lyle Markham
• 
  Peter LaCroix

  Movie A.D.
• 
  William Atherton

  Eric Walker
• 
  Eliza Roberts

  Mrs. McKinney

• 
  Tony Westman

  camera and electrical departme
• 
  Dick DeBenedictis

  departament sunet
• 
  Fred Silverman

  producător
• 
  Joyce Burditt

  producător
• 
  Barry Steinberg

  producător
• 
  Dean Hargrove

  producător
• 
  Michael Nemirsky

  design de producţie
• 
  Michelle MacLaren

  production manager
• 
  Mike Moder

  production manager
• 
  Vladimir Stefoff

  second unit director or assist
• 
  Don McGovern

  cascador
• 
  Joyce Burditt

  scriitor
• 
  Dean Hargrove

  scriitor