• 
  Hubert Cornfield

  regizor

• 
  Hubert Cornfield

  scenarist

• 
  Sidney Poitier

  doctor
• 
  Bobby Darin

  Pacientul
• 
  William H. O'Brien

  Spectator at Bund Meeting
• 
  Peter Falk

  Young psychiatrist
• 
  Butch Patrick

  Imaginary Playmate
• 
  Richard Bakalyan

  Jimmy

• 
  George Murdock

  Rally speaker
• 
  Harry Wilson

  Convict/Inmate
• 
  Barry Gordon

  Boy patient
• 
  Carl Benton Reid

  Chief medical officer