Speaking in Tongues — Jeffery Deaver

Two men of words. One seeks only peace. The other, violence...

Aaron Matthews is a man with a gift: he can talk anyone into doing almost anything. As a psychologist he used that talent to help people. Now he's using it against one man in a deadly scheme of revenge. With former trial lawyer Tate Collier as his target, the brilliant, ruthless Matthews knows the easiest way to destroy his adversary is to strike at the point of least resistance, which for Collier is his teenage daughter, Megan.