Der Zweikampf(1986)

movie - first aired/released 1986-07-16

Directed by Gert Steinheimer

Two old men: one, a friendly, "normal" citizen, suddenly has murderous thoughts and frees himself bit by bit from annoying fellow human beings. The other is his neighbor, a retired detective who is unable to find definitive proof against the suspected murderer. As only one of them can emerge victorious from the story, they both set about the final, decisive showdown.