Heres the blurb from Simon Green's website:
John Taylor is a P.I. with a special talent for finding lost things in the dark and secret centre of London known as the Nightside. He’s also the reluctant owner of a very special—and dangerous—weapon. Excalibur, the legendary sword. To find out why he was chosen to wield it, John must consult the Last Defenders of Camelot, a group of knights who dwell in a place that some find more frightening than the Nightside.
London Proper. It’s been years since John’s been back—and there are good reasons for that.
Obviously, if you haven't read the first ten books you won't get much out of this book. As far as a Nightside book goes it is pretty good. Unlike some of the earlier books not every paragraph ends with the tag "in the Nightside". The strangeness in the Nightside is really not an issue in this book but we might see it in the next book. The lack of the tag is probably why the book is so short. It felt more like a side-plot pulled out of a bigger novel than a book in its own right. I know this is a concern for all series of any length, but this book's modest word count seemed to stand out in this collection of slim novels.
A straightforward plot with an easy resolution, but a pleasant read nevertheless.The soap opera cliffhanger ending isn't much of a surprise if you know that the name of the next book is The Bride Wore Black Leather.