Großalarm (1938)

The newspaper delivery driver Paul falls in love with Lotte, who works in her mother’s kiosk. One day, Paul helps a man in a black Mercedes, who’s been in an accident. While helping him, a notebook has fallen out of the man’s pocket, which Paul thinks is his own and pockets. In fact, the notebook belongs to a band of auto thieves, who’ll now do anything and everything possible to get the book back.

Unfortunately the movie Großalarm is not yet available on HBO Max.