When Jay and Lila Cooper entered the caves—the tombs of Enak—with their archaeologist father, they hoped to find one member of the expedition who had somehow vanished. Instead, they came upon a terrifying religion and new secrets that soon turned into an incredible danger for them. Who is Ha-Rafa, or what is Ha-Rafa? How did he keep the locals in such all-consuming fear? Knowing they would not be able to avoid meeting this villain, whoever he might be, the Coopers desperately search for answers. As the mystery of Jay, Lila, and their father is unraveled, they face even more dangerous adventures. Will they be able to understand the truth before irreparable harm happens—or will they be swept away in Ha-Rafa’s last desperate attempt to preserve his evil powers?