Through the streets of London, angels and demons compete for the souls of mortal man. Between the darkness and the light walks Rachael, the dark angel. Not bound by the constraints of angels and lacking the black intent of demons she exists for her own ends. The first soul to escape the void between Heaven and Hell, she feeds on the energies of the lusts and loves of mortal man. Dead for six centuries, Rachael is beginning to learn she can longer stand on the side-lines. A demon seeks dominion over the Earth and needs to possess Rachael's ancient soul for his own ends. Against the demon stands Briathos and all the Host who are charged with thwarting the demon. Though she wishes to remain free of the influences of the other immortals, standing alone against the fallen angel will mean her end. Now is the time to choose; she can flee to the void and exist without form or she can compromise her freedom and act with the Host. The future of mankind may hinge on her decisions and time is running out.