Quote:The man known only as Brock lives a quiet existence as gamekeeper on a secluded Scottish estate. The tranquility is disrupted when Russian paramilitary mercenaries storm the estate and kill Jonah Morgan, Brock's friend and owner of the estate. To avenge Jonah's death and protect a secret equation, Brock must turn predator and journey deep into an unfamiliar, urban underworld. Throughout his journey, he is plagued by a dark past and his son's death.