Unable to return to the army after a serious head injury, Lieutenant Charles Acland moves to London where he begins to display sporadic bouts of aggression. When he almost kills a man in a pub, he attracts the attention of police who are investigating three "gay" murders in the area. Frightened and alone, Acland turns to the one woman he trusts to help him find the reasons behind his rage. When Lieutenant Charles Acland is flown home from Iraq with serious head injuries, he faces not only permanent disfigurement but also an apparent change to his previously outgoing personality. After his injuries prevent his return to the army, he cuts all ties with his former life and moves to London.