Reparto 19

1. 

   Robert Forster

   Prof. Paul Corwin / The Clone

2. 

   Adrienne Barbeau

   Margaret Corwin

3. 

   Ray Milland

   Prof. Meredith

4. 

   David Sheiner

   Prof. Sidney Hillstrom

5. John Lehne

   Lt. Merholz

6. Denise DuBarry

   Ann Sweeney

7. Jack De Mave

   Roger

8. Thomas Bellin

   Ed Linnick

9. Heather Hobbs

   Jenny

10. 

    Eddie Quillan

    Watchman

11. Raye Sheffield

    Clone

12. Russell Shannon

    Guard

13. 

    James Nolan

    Dr. Tapler

14. Madeleine Shaner

    Audrey Linnick

15. 

    Johnny Hock

    1st Skater

16. Tom Elliott

    2nd Skater

17. Thomas McGowan

    Andrew Pauletta (uncredited)

18. John Herman Shaner

    Fire Captain (uncredited)

19. D.A. Young

    Lance (uncredited)

Equipo 17