**edited 12/04/13 
 D.I. Jimmy Quill of the Met is well aware of the disastrous ways a five-year undercover sting might end: you might not capture the perp; you might not be able to pin anything on him; your UCs might defect or be injured. And, of course, you might have the kingpin in custody and willing to confess when he inexplicably explodes in a welter of blood--right in the middle of a police interrogation room. As Quill and his team begin to investigate the mysterious death, they find themselves unexpectedly gifted with the Sight. It isn't long before they realize that human gangsters aren't the biggest monsters stalking the London streets. 
 Due to my disapproval of GR's new and rather subjective review deletion policy, the rest of my (rather verbose) review is posted over here at Booklikes.