Ten thousand men have gathered on Monkenheath not far from the centre of Angleby in memory of Loy Tanner's rebellion in the sixteenth century. That gathering ended in hanging but the modern gathering seem peaceful if worrying for the powers that be in Angleby. Inspect Ben Jurnet is not at all sure it is a police matter and in any case he is still dominated by the violent death of his girlfriend Miriam.
When Charlie Appleyard, leader of the gathering, is found dead in the city's red light district the whole thing becomes a police matter. I found this book compelling reading and quite disturbing at times. The nature of crowds and the way they behave is well done and convincing and the book really shows how something small can turn a peaceful crowd into a riot.
I thought all the characters were convincing and believable and the examination of some of the depths of human nature was frightening and thought provoking. The ending especially is the stuff of nightmares without being graphically described. This is the last book in this underrated series and I would recommend the whole series to anyone who likes traditional crime novels with added psychological depth.