A security leak is found at a Southern California atomic plant. The authorities stand in fear that the information leaked would go to a hostile nation. To investigate the case more efficiently, Dan O'Hara, an FBI agent, and Philip Grayson, a Scotland Yard sleuth, join forces. Will they manage to stop the spy ring from achieving their aim?
| Writing | Bertram Millhauser | Story |
| Directing | Gordon Douglas | Director |
| Writing | George Bruce | Screenplay |
| Camera | George Robinson | Director of Photography |
| Directing | Dorothy B. Cormack | Script Supervisor |
| Costume & Make-Up | Edward P. Lambert | Wardrobe Supervisor |
| Editing | James E. Newcom | Editor |
| Sound | John R. Carter | Sound |
| Sound | Paul Sawtell | Original Music Composer |
| Camera | William Dalton | Grip |
| Costume & Make-Up | Margaret Martin | Hairstylist |
| Camera | Edward Colman | Camera Operator |
| Camera | Ken Lobben | Still Photographer |
| Art | Rudolph Sternad | Art Direction |
| Directing | Ridgeway Callow | Assistant Director |
| Costume & Make-Up | Norbert A. Myles | Makeup Artist |
| Production | Edward Small | Producer |
| Production | Joseph Small | Unit Manager |
| Art | Howard Bristol | Set Decoration |
| Production | Grant Whytock | Producer |
