Third book in and Devlin is still a compelling character, his evolving relationships with work and family alike having real believability. And it's not just the imperfection of the relationships, it's the man's imperfection as an investigator - the mistakes he makes and questionable retaliations - that makes him so attractive. This book still has the complexity of the previous two, which keeps the pace lively, but where Gallows Lane became a little swamped towards the end with many players in a single game here a clear division between different crimes being examined simultaneously (though they are related) makes the threads easier to follow. It does mean that a little too much happens "off camera" as Devlin can't be everywhere at once, but on balance I'd rather the divisions were there. The writing is less lyrical than book one, but arguably that's how Devlin as the narrator becomes more real.
Strongly recommend these books.