A female serial killer is on the loose, and it's up to FBI agents Dillon Savich and Lacey Sherlock to track her down - and stop her before it's too late. There's evidence that the woman, Kirsten Bolger, has a killer bloodline, too: a connection to the notorious Ted Bundy only complicates the case. But the crack team of Savich and Sherlock are on it - and better than ever.|
At the same time, Special Agent Lucy Carlisle learns from her dying father that her grandfather hadn't simply walked away from his family twenty-two years earlier: he had, in fact, been murdered by his wife, Lucy's grandmother. Determined to uncover the truth, Lucy moves into her grandmother's Maryland mansion, where she finds a skeleton in a steamer trunk and an old ring sewn inside the body's trouser cuff. She's led to her grandfather's secret papers, and learns about her grandmother's obsession with the ring and a mysterious group called The Protectors.