The thriller The Secret Weapon (1943), directed by Theodor Luts and Erkki Uotila, is set in Helsinki during the Continuation War. Toini Salonen, hiding behind several pseudonyms, arrives in Finland and travels from Turku to Helsinki, where he's hired as the secretary of engineer Rautavuori with the intention of spying on his secret drawings. The night watchman of the Finnish Export Tree is killed in connection with arson. Office manager Pulkkinen tells journalist Erkki Kari that the dead guard was his father...