Firstly, let me say I may be a bit biased, as I love all the Matthew Swift Books since I first read A Madness of Angels, and I always wait impatiently for the next one to be published .I particularly like that they are set in London, a much older, more arcane and haunted place than any of the American cities usually featured in Urban Fantasy. It seems to me that London itself is just as much a living entity in the stories as any other character, human or otherwise.
This is a much darker episode than the preceding books, but then it is about a powerful addictive drug that ultimately brings death, the misuse of power, betrayal and revenge. Matthew himself stumbles around attempting to right immense wrongs, and regretting that the Blue Electric Angels are no longer entirely human. Don't let this put you off - it is also fast and furious, and about loyalty, doggedness and friendship freely given.
Ms Griffin's writing is powerful and in parts lyrical, and made me feel sympathy for her monster as Mary Shelley made
me feel sorry for Frankenstein's monster .But then, who are the real monsters?
I don't go to London often, but next time I will be looking out for the landmarks mentioned in the series, and craning my neck to find the Silver Dragons.