London in the eighteenth century is a city of extremes; squalor and superstition vie with elegance and enlightenment as the capital's brilliant architect Nicholas Dyer is commissioned to build several new churches in the aftermath of the Great Fire. Two hundred and fifty years later in the sprawling metropolis of London the past lives on, as CID Detective Nicholas Hawksmoor investigates a series of macabre murders that have occurred on the sites of certain eighteenth century churches in the city...