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In the final installment of New York Times bestselling author Faye Kellerman's three-part series, the serial killer whom Ben has been searching for targets once again someone he loves... After Ro's stint working part time at a hotel where scientists frequently stay, she manages to hack into their computer and retrieve a list of scientists' and other lab employees' names. When she gives the data to Ben, he's floored that she's gone to such lengths for him. Though the ice between them has melted, he knows he can't get involved with Ro or anyone else again until he finds Ellen's killer. He can't afford the distractions. But he doesn't realize just how close he's come to the killer--or that the killer knows Ben is on to him--until he finds all of the tires on his car slashed after leaving the prom. Now Ben knows no one he loves is safe--not Ro, not his parents, not his teenage sister Hayley, or her best friend Lily who has a huge crush on him. With the stakes dangerously high, Ben knows he's running out of time--and that his next chance at apprehending the killer may very well be his last...