"The Fear of an Unfaithful Woman" - Inge Duhan lives with her husband, the lawyer Erich Duhan, and her little daughter Susi in Berlin. Inge is a very attractive woman. She loves her husband and has always been faithful to him. On a holiday trip to the French Riviera Inge meet the charming painter Francard. A brief affair begins that turns into blackmail.
"Guilty" - Thomas Feld returns home after 16 years in prison to find his wife Magda and daughter Maria fell in the hands of Peter Cornelius, the owner of a cabaret. Lawyer Frank Peters falls in love with Maria.
The story of Brennende Grenze (= Burning Border) starts after the end of WWI. Polish franctireurs invade the German bordering regions which are to be given to Poland as agreed on in the post-war peace treaties. Luise von Willkühnen's manor is invaded by Ladislaus von Zeremski, his lover Nadja and their gang. They treaten the inhabitants until Luise's son kills Zeremski.
