Blackwater — Conn Iggulden

How far can you go before you're in too deep? A dark, chilling psychological thriller from number one best-selling author Conn Iggulden. Davey has always lived in the shadow of his older brother, a smiling sociopath who will stop at nothing to protect himself and his family. But when the shadowy figure of Denis Tanter comes into Davey's life, how far will the bond of brotherhood reach?