Newly dead and struggling to cope with her new reality, Emma Elliott is thrust into a dark and desperate vision of London. In her fight to survive she meets friends, both old and new, and uncovers a world inhabited by two warring clans of angels, one bent on the ultimate destruction of mankind, the other committed to our salvation. A way out presents itself but with the forces arrayed against her Emma starts to wonder why, of all the people who have found themselves in this position; she is being singled out for such special attention. As time passes more questions arise for Emma. Who is Isabella, the woman she is constantly mistaken for? Who are the mysterious Cado Angelus who cast a shadow over Emma's every move? And what part does Emma have to play in the events that will soon unfold in her world and ours.