Orphan and street urchin, Jim Kerrigan dreams of a better life out of Victorian London's slum dwellings. Until he meets Caxton Tempest. Now he's just trying to survive.
Who is Tempest?
There are certain people intent on finding the answer to that question.
Perhaps they could ask his friend Johnny Chen, loyal companion and master of the martial arts.
Or maybe Denver McCade, gun toting cowgirl on the run in London's opium dens as she tries to escape her own personal demons.
They could try asking Murmur, once a king in Hell but now the owner of a shabby shop of the occult in London's East End.
Then there's Inspector Arthur C Behrends, of London's police force who has his hands full with a string of grisly murders.
Or Zedekiah Kralik, but what's his connection to Denver and why is he so intent on gathering together the fragments of the Sigil of Semjaza?
They could ask Billy Rackitt, escaped convict who has discovered another London beneath the London he knows so well.
Or maybe they could just ask Jim Kerrigan.
Orphan, street urchin, thrust into the dark and dangerous world of Caxton Tempest, Jim may come to find out more about his rescuer than he would like.