An unknown curiosity even for experts, this is a film from the late work of the director of the classic films Mother Krause's Journey to Happiness (1929) and Berlin, Alexanderplatz (1931). Although the communist Philipp Jutzi readily switched sides to the new rulers of Germany after the change of regime, the Goebbels administration did not forget his past. At first, he was allowed to make feature films for two more years (including The Cossack and the Nightingale with Jarmila Novotná, 1935), then only short films, such as this detective story with an educational mission.