January 1943. Warsaw is a city of the dead.

In the ghetto, the last fifty thousand Jews await their fate but, unlike those who preceded them to the death camps, they are prepared to fight to the end. Jan Kalisz, Kripo investigator and Resistance double-agent, has promised to supply them with weapons. But how will he fulfil his vow? The murder of a German officer appears to provide an opportunity.

For the victim is a man with multiple identities, one of which is a wealthy Jew… The hunt for the murderer draws Kalisz into the chaos of the ghetto, only to find a new, perilous mission awaiting him. SS death squads are not the only enemy the Jews fear. A mysterious figure – known only as the Golem – stalks the ruined streets, spiriting away orphaned children.

Can Kalisz track him down before he strikes again?