The Spectre Games — M.J. Trow

Book one in the Fyre & Stone series.Two men from the same city, but very different worlds.Sebastian Fyre is a wealthy young Lord with an unshakable belief that he can communicate with the dead. John Stone is a tough policeman who grew up in the Victorian slum tenements of the city he now patrols.A series of brutal murders across the city throw these two men into a reluctant and volatile partnership.Fyre and Stone attempt to hunt down a conspiracy of killers, while trying to avoid becoming prey themselves.