|Directed by||Harold French|
|Produced by||Anthony Havelock-Allan|
|Written by||Anatole de Grunwald
|Music by||Nicholas Brodszky|
|Edited by||Vera Campbell|
|Distributed by||Columbia Pictures|
In May 1940, Bob Randall (Greene), a war correspondent with a fictional London newspaper, the Gazette, is evacuated with British troops from the beaches of Dunkirk. He writes a hard-hitting story of his experiences, but it is killed by the censor (Radford).
As London burns in the Blitz, and the newspaper struggles to stay in business, he writes several more eye-witness stories, and then learns of People For Peace, a pacifist organisation. He suspects the members of being Nazi tools and investigates the group. He finds the Gazette's fashion journalist, Carole Bennett (Hobson), at the group's meeting, also there after a story. This brings him to the attention of British counter-intelligence, and he is informed his suspicions are correct and that it has already been penetrated by a British security officer.
When Trapes, one of the sincere members of the organisation, changes his views and sends Bennett a letter, but he naively informs his fellow "pacifists". They reveal themselves to be Nazi agents and force him to contact Bennett in an attempt to retrieve the letter. However, they are captured after a shootout with the authorities. The two reporters have their story, but the security officer in charge makes it clear that the incident must remain unpublished.
- Richard Greene as Bob Randall
- Valerie Hobson as Carol Bennett
- Basil Radford as Lamb
- Roland Culver as Stannard
- Brefni O'Rorke as Denton
- Miles Malleson as Farmfield
- George Carney as Landlord
- Muriel George as Landlady
- André Morell as Marchand
- Frederick Cooper as Trapes
- George Thorpe as Major Edwards
- Renee Gadd as Miss Hartley
- Claude Bailey as George Roddington
- Ronald Shiner as Agitator
- Wally Patch as Taxi driver at Victoria Station