Shortly before Christmas, a strange piece of evidence and an ancient book drive the young detective Carolin Arends to reopen the mysterious murder case of Alexander Michalski. She doesn't yet know that her greatest enemy is time itself and that she is already in the perpetrator's sights.

A young Western woman is recruited by the Mossad to go undercover in Tehran where she becomes entangled in a complex triangle with her handler and her subject.

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.