Book 4 - Buchanans series
Alec Buchanan is about to leave his job on the Chicago police force to return to his roots in Boston. He has only three weeks left, but before he goes, he's given one last assignment - guard Regan Hamilton Madison, a member of a prominent Chicago family who owns a worldwide chain of hotels.
Agreeing to attend a seminar given by a psychologist with a shady reputation as a favor to a reporter friend, Regan Madison takes part in an exercise in which guests are asked to identify those who have hurt or deceived them over the years, but the exercise takes a lethal turn when those on her list begin to turn up dead.
Alec resolves to put in his three weeks and move on, but he soon discovers that remaining detached when it comes to Regan is his toughest assignment of all.