August Books 7) Standing In Another Man's Grave, by Ian Rankin
'I'm saying Rebus got results the old way, without seeming to earn them. He did tat because he got close to some nasty people in a way you couldn't. This is what you're good at, Malcolm.' He tapped the desk. 'Rebus specialises in something a bit different - doesn't necessarily make him the enemy.'
Rebus is back; though retired from the police, he is helping out at a cold-case unit as a civilian contractor, and remains as determinedly individualistic as ever. In this story his determination to identify and track down a serial killer by whatever means necessary is a uncomfortable contrast with the structures and systems of the modern force, which Rankin suggests has lost sight of the ethical forest for the procedural trees; the story is at least as much about Rebus' relationship with his former workplace as about the crime. An excellent addition to the series.