As the end of the Second World War approaches and the Soviet Red Army is advancing, a group of concentration camp inmates is helped to escape by a Polish doctor. They hide in a wood where they meet other fugitives, who have been there for months, constantly in fear of being discovered. Out of fear of the German army patrols, they do not dare to leave the forest, even as the food supplies run low.

Wartime tale of a group of British scientists efforts to develop the first radar system. They did it just in time for it to be used in the Battle of Britain against the might of the Nazi Luftwaffe. Without it the little island could well have been overrun.

With the ending of the Spanish Civil War, a dispirited band of volunteers from the International Brigades seeks refuge in France. But on reaching the frontier, the band is disarmed, and all are detained as political prisoners. Then come instructions from Vichy that all fit prisoners are to be sent to Morocco to work on the Sahara railway for the Germans. However, one man manages to escape to London with vital information for the Allies.

A hunt for a spy, in a hotel in the South of France just before World War Two.