• 
  George Segal

  Harry Benson
• 
  Jill Clayburgh

  Angela Black
• 
  Victor Argo

  Orderly
• 
  Richard Dysart

  Dr. John Ellis
• 
  Dee Carroll

  Night Nurse
• 
  William Hansen

  Dr. Ezra Manon
• 
  Gene Borkan

  Benson's Guard
• 
  Jason Wingreen

  Instructor

• 
  James Sikking

  Ralph Friedman
• 
  Steve Kanaly

  Edmonds
• 
  Jack Colvin

  Detectiv
• 
  Robert Ito

  Anesthetist
• 
  Lee de Broux

  Reporter
• 
  Michael C. Gwynne

  Dr. Robert Morris
• 
  Norman Burton

  Det. Capt. Anders

• 
  Ian Wolfe

  Preot
• 
  Jim Antonio

  Richards
• 
  Burke Byrnes

  Benson's Guard
• 
  Matt Clark

  Gerhard
• 
  Joan Hackett

  Dr. Janet Ross
• 
  Donald Moffat

  Dr. Arthur McPherson
• 
  Jordan Rhodes

  Questioner No. 1

• 
  Richard H. Kline

  imagine
• 
  Donald Brooks

  costume
• 
  Vittorio Nino Novarese

  costume
• 
  Robert L. Wolfe

  montaj
• 
  Joel Cox

  editorial department
• 
  Dan Wallin

  music department
• 
  Marvin March

  set decorator
• 
  Nicholas Stevenson (I)

  sound department
• 
  Hugh Strain

  sound department
• 
  Michael Crichton

  scriitor