Marten Baum

A psychologist specializing in microexpression, Dr. Marlene Nielsen is called in to assist on an apparently obvious case of self-defence. She is asked to help establish the identity of a woman who fatally wounded an attacker, but who steadfastly refuses to speak. But in the face of the »woman without a name« Marlene sees evidence of an intentional act. When no-one takes her seriously, she begins to investigate on her own and comes across an unpunished crime from the past.

Beneath the decadence of 1929 Berlin, lies an underworld city of sin. Police investigator Gereon Rath has been transferred from Cologne to the epicenter of political and social changes in the Golden Twenties.