"No one suspects that the deadly pharmaceutical disasters ravaging the African continent have been the fallout from one person's intent to acquire immortality. By the time Dr. Rachel Allen discovers that the ancient virus she believes is securely held in an American vault has been weaponized, it is too late to call for help. If this new potential bioweapon is launched beyond the borders of Africa, it will destroy more than the world. It will destroy everything she believes to be true about the man she loved. Buckle in. The stunning conclusion to the Agents of Mercy series is a heart-pounding ride that brings together the characters...from Ghost heart, Port of origin, and Lethal outbreak...but you won't believe who orchestrated every deadly move from the first page to the last."--Back cover.