The best book of the series, so far. No doubt.
The mystery was absolutely enthralling and very clever. Young men across the city are turning up dead, murdered, in brutal ways. That is one thing they all have in common, another is the connection of their fathers. A connection of a secret that has been hidden for years. What kind of secret would men keep, while their sons are turning up brutally murdered? The conclusion is one that is unfathomable and totally outrageous.
The other plus to this installment is the unmasking of the many layers of Sebastian St. Cyr. We start to see what the effects of war can really bring about in a person. With his actions and reactions, we start to see a darker persona.
My rule with a mystery series is that I have to have all the books when I start, or at least have the rest of them on the way to me. I do NOT have the fourth book yet and I have to say, I'm losing my mind a bit, here. The cliffhanger was just... immensely good.