Vier Leben.

In broad daylight, a man is shot dead from a great distance by a sniper in the center of Berlin, near the Friedrichstrasse subway station. Susanne Bonard and Robert Karow are under pressure - and under observation: Preparations are underway for a major state visit to Berlin and the Senator for the Interior is worried about the murder. Public Prosecutor Taghavi demands that the matter be clarified as quickly as possible.