The Face of the Assassin

When a mysterious woman arrives at the home of Paul Bern, a forensic artist who lives in Austin, Texas, she brings him two things: a human skull that she smuggled out of Mexico and an incredible secret that brings Paul face to face with the unimaginable.
Clearing up the gruesome murder of an American in the shadows of Mexico City's underworld, Paul Bern of Austin, Texas, finds himself facing the unimaginable. A forensic artist by trade, an expert at reconstructing the features of the mangled dead, Paul discovers a mirror image of himself. Separated at birth, Paul's twin went on to work at the other end of the forensic spectrum and has paid for his choice. Now, Paul is being blackmailed into standing in for the brother he never knew, committing acts of violence he never thought possible. Long-dormant instincts and talents awaken as he is submerged in this terrifying new life. Struggling to survive, Paul will come to know his lost brother even more intimately than if they'd grown up together.