| CAST | CONNECTIONS | |
|---|---|---|
| Michel Ray | Bud Brewster | |
| Adam Williams | Dave Brewster | |
| Peggy Webber | Anne Brewster | » [912] THE SCREAMING SKULL |
| Johnny Washbrook | Tim Gamble | |
| Jackie Coogan | Hank Johnson | |
| Richard Shannon | Lieutenant Colonel Alan Manley | |
| Raymond Bailey | Dr. Wahrman | |
| Sandy Descher | Eadie Johnson | |
| Larry Pennell | Major Thomas | |
| Peter Baldwin | Security Officer James | |
| Ty Hardin | Sentry (as Ty Hungerford) | |
| Russell Johnson | Joe Gamble (as Russell D.... | » [M01] THIS ISLAND EARTH |
| David Bair | Saul Wahrman | |
| Johnny Crawford | Ken Brewster | » [523] VILLAGE OF THE GIANTS |
| Eilene Janssen | Phyllis Manley | » [517] THE BEGINNING OF THE END |
| Jean Engstrom | Peg Gamble | |
| Vera Marshe | Frieda Johnson | » [414] TORMENTED |
| John Benson | Sentry #2 (uncredited) | |
| James Douglas | Communications Man (uncredited) | » [517] THE BEGINNING OF THE END |
| Paul Gary | Man at Loudspeaker #1... | |
| Gloria Anne Halper | Helen (uncredited) | |
| Helen Jay | Mother (uncredited) | » [804] THE DEADLY MANTIS |
| Howard Joslin | Radar Operator (uncredited) | |
| Mike Mahoney | Sergeant Cooper (uncredited) | |
| Burt Metcalfe | Guard (uncredited) | |
| John Morley | Doctor (uncredited) | |
| Leo Needham | Truck Driver (uncredited) | |
| Arvid Nelson | Guard (uncredited) | |
| Jimmy Ogg | Floor Manager (uncredited) | » [522] TEEN-AGE CRIME WAVE |
| Allan Ray | Man at Loudspeaker #2... | |
| Alan Roberts | Buster (uncredited) | |
| Terry Terrill | Radar Operator (uncredited) | |
| Sid Tomack | Reporter Dan Wicks (uncredited) | |
| Louis Towers | George (uncredited) | |
| Ray Walker | Reporter Richard Lloyd... | |
| James Wilson | Sentry #1 (uncredited) | |
| Robert G. Anderson | Guard (uncredited) | |