Even Dogs in the Wild, by Ian Rankin

Second paragraph of third chapter:

And besides, he was no longer a cop.

Latest in the post-retirement stories of John Rebus, Edinburgh detective – this time combining his old gangland foes with new rivals, and an ancient political sex scandal (borrowed from the real-life Kincora scandal in Belfast) combined with the legacy of more recent conflicts, mixed up with colleagues of dubious loyalty, and of course death. I felt that the internal police wiring didn’t quite link up here, but the rest of it made a lot of sense and the resolution was very satisfying.

This was the top non-sf fiction book left on the list recommended by you guys last year. Next on that list is Kings of the North, by Cecilia Holland.