**F** **BI Agent Atlee Pine's search for her sister Mercy clashes with military investigator John Puller's high-stakes case, leading them both deep into a global conspiracy -- from which neither of them will escape unscathed.** For many long years, Atlee Pine was tormented by uncertainty after her twin sister, Mercy, was abducted at the age of six and never seen again. Now, just as Atlee is p...