Die Mörder Sind unter Uns plot
Susanne Wallner returns to her old apartment in Berlin just after the end of World War II. There she finds its current resident: the ever-drunk and traumatized Dr. Hans Mertens. Susanne politely asks him if he wants to look for a home of his own as soon as possible; until then he can stay. In the following period, a mutual sympathy and eventually even love develops between the two housemates. Hans is doing better and better, until one day Susanne finds a letter from Captain Ferdinand Brückner, which Hans should deliver to his wife after his death. When he later hears from Susanne that Brückner is still alive, something snaps in Hans and it slowly becomes clear why he is so traumatized.