| Actor | John Agar (as Col. Matthews), Charles Aidman (as dave), Cecil Kellaway (as Dr. A.A. Andrews), Edward Platt (as Dr. Easton), John Clarke (2) (as Space Crew), Robert Cornthwaite (as Sen. Royce) |
| Actress | Whitney Blake (as June), Gail Kobe (as Kim) |
| Directed By | Joseph Pevney |