The Chameleon's Shadow by Minette Walters (AUDIO)

Tightly plotted and well written, keeping the reader guessing until the last moment. Lietenant Charles Acland is on patrol in Iraq when his Scimitar tank is ambushed by a roadside bomb. Only he survives with extensive damage to one side of his face. He fails in his attempt to rejoin his unit and frustration, migraine and alienation lead to acts of violence culminating in him assaulting a stockbroker in a bar whose only crime is to be of Pakistani origin. He is hauled off by bodybuilder doctor part owner butch dyke Jackson (a brilliant character) whose compassion sets him on a new path.