Edinburgh-based Rankin is one of my favorite writers, and this is a good read. Sadly, the protagonist isn't Rankin's usual copper Inspector Rebus, but  Malcolm Fox is still interesting, a member of the Complaints group. In the US we call it Internal Affairs; I like the forthrighness of the Scottish title, don't you? Fox is sent to investigate a man he grows to like. Soon, they are on parallel tracks investigating the same thing. But can Jamie Breck be what he claims to be: an honest cop? What I like about Rankin's writing is the economy of overt emotion and adjectives; I'm a writer who thinks adjectives are the first line of writing, Rankin obviously doesn't. That's why he's published, I guess. It's a 4.