Bestselling author Dennis Lehane is back with a vengeance in this noir mystery with a psychological edge. Boston private investigators Patrick Kenzie and Angela Gennaro's relationship has hit the skids. But despite their problems, they join forces to close down a predator whose modus operandi seems to put him beyond the law. This killer's insidious murder weapon is within his victim's mind: no smoking gun, no bloody knife, just merciless manipulation that drives his targets to kill themselves. As Patrick and Angie attempt to identify and save his next victim, this sinister force turns on them, and thus begins a dangerous battle of wits: a tormenting, life-threatening game of psychological warfare where simple survival seems like a mixed blessing - because not even the winner will emerge unscathed.