Rex-Film Bloemer & Company, Berlin

A serial killer is on the run, after escaping a mental institution. He befriends a woman and her child, but the urge to strangle women with red necklaces still haunts him.

"Gems" - Embedded in a frame story, the film shows excerpts from 18 entertainment films of the time, among others, "The Gypsy Baron", "The Three Codonas", "La Habanera", "Viennese Blood", "Sophienlund", and "Mask in Blue".

The captain Paul Heider enjoys the reputation of a Danube Casanova.