Tori and Lainie O'Neal, the twin sisters who somehow survived the fateful crash, will meet again after years of estrangement, now more bitter than ever in the aftermath of a vicious murder. With the help of forensic pathologist Birdy Waterman, Kendall discovers a chilling pattern of unsolved fatalities. Before another victim is claimed, Stark races to unmask one the most relentless killers she's ever encountered--a killer with the perfect disguise...