L'invention d'une nouvelle dynamo permettant de créer de l'électricité à partir de la lumière va mettre en danger l'inventeur, le professeur Farrington, et sa fille Doris...
En 1915, derrière les lignes allemandes, dans la ville de Roulers, Marthe Cnockaert, infirmière, est embauchée par le médecin-chef de l'hôpital de campagne de l'envahisseur. Ses parents tiennent un café où de nombreux occupants viennent discuter autour d'un verre et même plus d'un ce qui facilite les indiscrétions.
In 1912, the Austrian secret service identifies Marcella Galdi, an Italian noblewoman who is visiting Vienna, as an Italian spy. To avoid diplomatic confusions, she is kidnapped while dancing with the Austrian General Staff officer Michael von Hombergk at a ball at the famous hotel Sacher in Vienna, and sent back to Italy. Shortly afterwards, a secret plan of an Austrian fortress appears in Hombergks office desk, and as he himself is unable to explain this, the secret service urges him to commit suicide, but instead he manages to escape from Vienna.
In the American Civil War, Union forces are in retreat after their defeat in the Second Battle of Bull Run. The Pauline Cushman Players are performing for wounded soldiers at a US military hospital. Pauline, a spy who works for Allen Pinkerton, persuades Gail to become a spy for the Union cause as Operator 13.
Agent Mala, an intelligence operative, investigates sabotage on the remote Clipper Island. A gang of spies causes the eruption of a volcano, for which Mala is blamed. He convinces the native Princess Melani of his innocence and helps her ward off a takeover by rival High Priest and spy collaborator Porotu and discover the identity of spy ringleader H.K...
En août 1914, deux acteurs de théâtre de Londres, l'Anglais Alan Barclow et l'Autrichienne Elsa Daranyi, sont sur le point de se marier lorsque l'Angleterre déclare la guerre à l'Allemagne.
The film opens with a description of the Black Tom explosion of a munitions supply located in Jersey City on the Hudson River. The explosion, which occurred during World War I was an act of sabotage by German agents.
En septembre 1938, des prototypes d'avions transportant des équipements secrets disparaissent lors de vols d'essai. Personne ne comprend pourquoi, y compris le Major Hammond et sa sœur Kay, une journaliste qui s'est fait embaucher à la cantine de la Barrett & Ward Aircraft Company.
During World War I, Franz Strendler, a master German spy has cost the British dearly. In desperation, they send for their best agent, currently undercover in Germany. Pilot Frank Bennett (Bruce Lester) is sent to pick him up, but the Germans are forewarned and Bennett is shot down. Luckily, he survives and is rescued by friendly soldiers. While recovering in a hospital, Bennett is tended by a pretty nurse, Helene Von Lorbeer (Margaret Lindsay). He tells her he loves her, but she informs him she is leaving, and they will not see each other again. However, after Bennett falls asleep, she kisses him on the cheek.
This is not a Bulldog Drummond picture despite the title playing off Jack Buchanan and his previous association with the character. Here he plays the role of Test Pilot 'Bulldog' Bill Watson. His friend Derek Sinclair (Sebastian Shaw) is convinced that the new man in his love's life is collaborating with the Nazis by sabotaging an armaments plant.
Aux tous débuts de la guerre, un navire danois qui cherchait à éviter les contrôles douaniers britanniques est forcé de rester au port. Son capitaine se fait voler les documents qui lui permettaient d'aller à terre avec son premier officier. En suivant le couple de voleurs, il va se retrouver impliqué dans la capture d'un groupe d'espions allemands.
Although the Royal Canadian Mounted Police are few in number, they successfully guard a vast dominion of the British Empire. From the United States border to the Arctic ice pack and from the Atlantic to the Pacific, the red coat of the Mountie is the symbol of law and order and a promise that justice will prevail. To these gallant men, "King of the Royal Mounted" is respectfully dedicated.— Opening caption