Who is Werner Franck?

Werner Franck is the older brother of Frieda Franck, and Carla von Ulrich's love interest. He works at the Air Ministry, and secretly runs a spy ring for Volodya Peshkov, which he ultimately turns over to Carla when he is called to the front. When he returns home, he discovers Carla has been raped, has a baby, but agrees to marry her and accept the baby. They also adopt an orphan girl named Rebecca, and conceive their own child.