Katharina Knie is a 1929 German silent drama film directed by Karl Grune and starring Eugen Klöpfer, Carmen Boni and Adele Sandrock. It is based on the 1928 play of the same title by Carl Zuckmayer.
Neglected by her husband, an ambitious lawyer, Irene seeks variety in Berlin's nightlife-- An evening of dancing, dolls, cocaine and immoral passion. Irene takes the "devious path" as she seeks to make her husband jealous.
