Dominion

A hitman and his paranormal companions are all that stands between London and a demon on the warpath in this urban fantasy novel with gangster movie flair

In the tunnels deep under London, the Earth Elementals are dying.

Hunted by something they know only as the Rotman, the Elementals have no one trustworthy they can turn to. Enter Don Drake, diabolist and semi-reformed hitman, and an almost-fallen angel called Trixie.

When the matriarch tells Don that Rotman is actually the Archdemon Bian...