Vladimir Bogdanov

One day Pavel, a young man wounded in the war, suddenly shows up at the home of a Moscow scientist name Krymov and claims to be his illegitimate son. Krymov denies this, but out of compassion he helps arrange a necessary operation for Pavel. Then certain things begin happening which suggest to Krymov that he may have a psychologically unstable fellow on his hands.

Russian Empire. The second decade of the twentieth century. As a result of the conflict between the Entente and the bloc of the Central Powers led by Germany, which erupted in August 1914, Russia is drawn into the First World War. A wave of unrest is rolling through the country. Revolutionary moods are increasing every day. Counterintelligence is trying with all its might to suppress the activity of German spies active in the territory of the country ...