The sixth in Bruen's Inspector Brant series about a group of police officers in South London. Fr whatever reason I read this one first. I think my enjoyment suffered a little bit for not having read the previous volumes. Despite this, I found Calibre to be an excellent read. Not as deep and soul-searching as the The Guards, it was still a well written, nicely plotted and just really fun book. The book is mainly concerned with the attempt to locate a serial killer working in South London. This particular character kills people who he finds to be rude or I'll mannered in public. (remind me never to go to South London). The characterization is done quite well and the interactions between the characters are complex and always interesting.
Clearly I should have started with the first in the series, A White Arrest. This book is just short of five stars for me.