It's 1855, but not as we know it. The schism between the One True French Catholic Church and the heretical Italian Catholic Church has stoked three centuries of conflict, imploding the dream of European ascendancy. Thousands flee the Spanish Inquisition for havens in Germany, France, Britain, and the colonies of the New World. The face and character of London has been indelibly altered by generations of refugees. Tasked with keeping order and preserving the ecumenical vision of the Holy French Catholic Church in the face of throngs clamoring for traditional British values, the London police find themselves in an awkward position. And nobody is quite sure how to deal with the technological innovation of animates: mindless laborers crafted from the body parts of the dead. A murderous plot with far-reaching implications casts a city torn between renaissance and tyranny as the unwitting catalyst for unspeakable global calamity. The fate of this world lies, as it often does, in the hands of a motley and disparate crew, brought together by inglorious serendipity. Ironworks and iron fists will take London, and the Old World with it, to the cutting edge of a treacherous new century.