Top Billed Cast

1. 

   Harry Townes

   Jim Benedict

2. 

   John Agar

   Col. Matthews

3. 

   Whitney Blake

   June

4. 

   Cecil Kellaway

   Dr. A.A. Andrews

5. 

   Charles Aidman

   Dave

6. 

   Gail Kobe

   Kim

7. 

   Edward Platt

   Dr. Easton (as Edward C. Platt)

8. 

   William Traylor

   Space Ship Crew

9. 

   John Clarke

   Space Ship Crew

10. 

    Joel Lawrence

    Space Ship Crew

11. 

    Jon Lormer

    Prof. Logan

12. 

    Robert Cornthwaite

    Sen. Royce

13. 

    Sam Edwards

    Technician (uncredited)

14. 

    Frank Gerstle

    Member of Senate Investigating Committee (uncredited)

15. 

    Biff McGuire

    Technician (uncredited)

16. 

    Ed Prentiss

    Mr. Duffy (uncredited)

17. 

    Bert Remsen

    Technician (uncredited)