What's your greatest fear?

It's criminal profiler Ivy Dunlap's job to unravel the psyches of the most dangerous men alive. None haunts her dreams more than the killer who took her son's life sixteen years ago, then silently disappeared into the dark. Now an urgent request for help from the Chicago police has reawakened Ivy's greatest nightmare. The Madonna Murderer has returned to fulfill his calling. This time Ivy understands the killer instinct. She knows what man is capable of. This time she's ready to confront her deepest fear, face-to-face. For the very last time...