Dark blood.

Richard Knox wants to leave his dark past behind after doing his time and seeing the error of his ways. But Detective Sergeant Logan McRae isn't thrilled about having to help a violent rapist settle into Aberdeen. Even worse, he's stuck with the man who put Knox behind bars, DSI Danby, supposedly around to keep an eye on things. Edinburgh gangster Malk the Knife wants a slice of Aberdeen's latest development boom. Local crime lord Wee Hamish Mowat has ominous plans for Logan's future. And Knox's past isn't finished with him yet.