After the Great War, Germany remains a country rocked by conflict. In the late 1920s the Nazis are creeping into positions of authority and Munich's police department is no exception.

Inspektor Axel Berg of the Mordkommission - Munich's newly formed homicide squad - deals mostly with routine deaths but when he's called to investigate the grisly murder of a young society wife, he is immediately thrown into a web of dangerous intrigue. Suddenly, senior colleagues have an unprecedented interest in his work, and there are rumours that the death might be linked to a political conspiracy.

Then two more corpses are discovered and Berg questions whether he's searching for a lone lunatic or a calculating assassin with a more sinister agenda. With few to trust, Berg has to judge who's more dangerous: the killer who hunts in the darkness, or the faceless enemy that could be anyone.