Sports journalist Colin Metcalfe is picked for the job of foreign correspondent in Norway when Hitler invades Poland. On the way to Langedal his boat is attacked by a German U-Boat, however when he tells the navy about it they do not believe him and, to make matters worse, he is removed from his job. When German forces invade Norway, Metcalfe returns determined to uncover what is going on and stop the Germans in their tracks.
| Directing | Harold French | Director |
| Sound | Richard Addinsell | Music |
| Camera | Cyril J. Knowles | Director of Photography |
| Production | Paul Soskin | Producer |
| Writing | Frank Owen | Story |
| Writing | Anatole de Grunwald | Screenplay |
| Writing | Patrick Kirwan | Screenplay |
| Writing | Terence Rattigan | Screenplay |
| Art | William C. Andrews | Art Direction |
| Editing | Michael C. Chorlton | Editor |
| Sound | C. C. Stevens | Sound Recordist |
| Directing | E.J. Holding | Assistant Director |
| Sound | A.W. Watkins | Sound Supervisor |
| Production | Tom White | Production Manager |
| Crew | Terence Rattigan | Treatment |
| Production | Harold Boxall | Executive In Charge Of Production |
| Lighting | Bernard Knowles | Lighting Manager |
| Crew | Anatole de Grunwald | Treatment |
| Crew | Patrick Kirwan | Treatment |
| Sound | Muir Mathieson | Conductor |