A chilling thriller that follows a twisting trail of dead bodies-and damaged minds-from the author of Monk . . .

The most powerful people alive have the greatest influence. And they can use it for good or bad.

Marcus Kline is the world's leading authority on communication and influence. He can tell what you are thinking. He can see inside you. He can step inside your mind.

When a series of murder victims bear the horrific hallmarks of an intelligent and remorseless serial killer, Detective Inspector Peter Jones turns to Marcus for help. As the killer sets a deadly pace, the irresistible and terrifying power of influence threatens friendships, reputations, and lives. When events appear to implicate the great Marcus Kline himself, everyone involved will learn that the worst pain isn't physical . . .