Wartime spy thriller. Richard Greene stars as war correspondent Bob Randall, who returns from Dunkirk to report on Nazi atrocities committed during the Blitzkrieg, and to deliver a stark warning about the traitors who aided the Germans in their conquest of Europe. He is outraged to discover that the 'People for Peace Society' in England are campaigning to appease the Germans, and tries to expose them for the fools they are - only to have his newspaper stories censored by Home Security. As the Blitz rages in London, Randall and fellow journalist Carol Bennett (Valerie Hobson) uncover an even more sinister side to the Society. Do they have advance knowledge of German bombing raids? And who is really controlling them?

The ninth in the series of the Bulldog Drummond adventure films based on the novels by Herman C. McNeile, this film was the only one to star John Lodge in the title role. In this outing for the daredevil sleuth, Hugh 'Bulldog' Drummond finds himself up against foreign agents who are trying to steal plans for a top-secret remote-controlled aircraft. Dorothy Mackaill co-stars as Drummond's feisty love interest, Doris.