An English scientist runs away from a research center with an atomic bomb. In a letter sent to the British Prime Minister he threatens to blow up the center of London if the Government don't announce the end of any research in this field within a week. Special agents from Scotland Yard try to stop him, with help from the scientist's assistant future son-in-law to find and stop the mad man.
| Directing | Roy Boulting | Director |
| Directing | John Boulting | Director |
| Production | John Boulting | Producer |
| Production | Roy Boulting | Producer |
| Sound | John Addison | Original Music Composer |
| Directing | Shirley Barnes | Continuity |
| Production | Dorothy Holloway | Casting |
| Camera | Gilbert Taylor | Director of Photography |
| Writing | James Bernard | Story |
| Writing | Roy Boulting | Screenplay |
| Writing | Frank Harvey | Screenplay |
| Costume & Make-Up | Honoria Plesch | Costume Design |
| Writing | Paul Dehn | Story |
| Sound | Eric Cass | Boom Operator |
| Camera | Ray Sturgess | Camera Operator |
| Art | John Elphick | Production Design |
| Production | Peter De Sarigny | Associate Producer |
| Production | John Palmer | Production Manager |
| Directing | Mike Johnson | Assistant Director |
| Camera | Robert Huke | Camera Operator |
| Camera | Gerald Moss | Camera Operator |
| Camera | Dennis Fox | Camera Operator |
| Sound | Bert Ross | Sound Recordist |
| Costume & Make-Up | U. P. Hutchinson | Makeup Artist |
| Sound | Bert Eggleton | Sound Editor |
| Sound | Ann Chegwidden | Assistant Sound Editor |
| Sound | Hubert Clifford | Conductor |
| Editing | John Boulting | Editor |
| Editing | Roy Boulting | Editor |
