Cast 28

1. 

   Jimmy Hunt

   David Maclean

2. 

   Arthur Franz

   Dr. Stuart Kelston

3. 

   Helena Carter

   Dr. Pat Blake, MD

4. 

   Leif Erickson

   Mr. George MacLean

5. 

   Hillary Brooke

   Mrs. Mary MacLean

6. 

   Morris Ankrum

   Col. Fielding

7. 

   Walter Sande

   Police Sgt. Mack Finlay

8. 

   Bert Freed

   Police Chief A.C. Barrows

9. Max Wagner

   Army Sgt. Rinaldi

10. Charles Gibb

    Lt. Blair

11. 

    Milburn Stone

    Army Capt. Roth

12. 

    Douglas Kennedy

    Officer Jackson

13. 

    Charles Cane

    Officer Blaine

14. 

    Fay Baker

    Mrs. Wilson

15. 

    Janine Perreau

    Kathy Wilson

16. 

    John Eldredge

    Mr. Turner

17. 

    Barbara Billingsley

    Kelston's Secretary

18. 

    Richard Deacon

    MP

19. Gil Herman

    Major Clary

20. Luce Potter

    The Martian Intelligence

21. 

    Lock Martin

    Mutant Carrying David to 'Intelligence'

22. Max Palmer

    Second Mutant Guarding the "Intelligence"

23. Todd Karns

    Jim the Gas Station Attendant

24. 

    Frank Wilcox

    Pentagon Chief of Staff

25. 

    Robert Shayne

    Dr. William Wilson

26. 

    William Phipps

    Sgt. Baker

27. 

    William Forrest

    Col. Mayberry

28. 

    Peter Brocco

    Brainard (bit)

Troupe 24