Heimweg (English: "The Way Home") is a novel from the German author and journalist Harald Martenstein.
He returns home from Russian captivity after the war to find his wife Katharina in an adulterous relationship.
In a key scene, it is revealed that Josef ordered the execution of a Russian commissar during World War II.
The "visitors" that she believes to be in her apartment, are in fact the family members of the dead.
They appear again in the book on a fictional level as a quasi-ghost figure, while at the same time the heroes appear to be real.