I found this one much slower to get into then Sleephead, Billingham's first crime novel. However, it did pick up pace and after about a third of the book I could not stop turning the pages. Two serial killers, working in partnership? A possible stretch of the imagination too far. However, the twists and turns of the plot, and the red herrings, balanced this, leading me to places I did not imagine the story would go. The main characters developed throughout the book, although it would be nice to give Thorne a love interest rather than his constant consideration of why he doesn't have one. (Sleepyhead's relationship for Thorne obviously came to nothing.) The dripping in of interactions with his father were excellent, with tension mounting as to his father's obvious state of health. Again Billingham marks out his crime writing from the British genre by having the style and pace of the American breed - mainly after that first third in respect of pace. Billingham is excellent on telling us about the lot of the police in London and what I imagine to be the very real pressures they are under. I am looking forward to his next book - and not too long to wait according to his website!