Edge - Jeffery Deaver

When a Washington, D.C. police detective is targeted by Henry Loving, he and his family are immediately put under government protection. Loving is a ruthless 'lifter', hired to extract information from his victims, and he will use whatever means necessary including kidnapping, torturing or killing their family. Assigned to the Kesslers is protection officer Corte: uncompromising, relentlessly devoted to protecting those in his care and a brilliant game strategist. He also knows just how brutal the lifter can be - six years earlier, Loving killed someone close to him. The situation soon escalates into a deadly contest between protector and lifter as each tries to outwit the other ...