The vandalism of these final resting places leads to a disturbing discovery: one of the damaged coffins does not contain human remains but instead a sculpture of a man made of clay. This so-called 'golem', a term from Jewish myth given to a figure brought to life by supernatural means, proves intriguing to Arnold and Hakim, even more so when it is stolen from a police storage facility in an armed raid.
The case leads the pair deep into London's past and its connections to wartime Prague, and onto the trail of a priceless jewel worth killing for.