• 
  Leonard Nimoy

  Dr. Richard Connought
• 
  Penelope Milford

  Kathy Morris
• 
  Steven Peterman

  Dr. Clark
• 
  Nicholas Guest

  Dr. Ames
• 
  Jonathan Estrin

  Mr. Wilcox
• 
  Christopher Allport

  Larry
• 
  Fredric Lehne

  Patrick Morris

• 
  Stan Winston

  art department

• 
  Lynn Stalmaster

  casting director
• 
  George Aliceson Tipton

  departament sunet
• 
  Scott C. Eyler

  montaj
• 
  Dennis E. Jones

  production manager
• 
  Robert Lewin

  scriitor