Anthropologist Martine Murdoch theorizes the existence of an ancient cult of heart-eaters to explain the condition of human remains found hidden within a long-abandoned Mayan city. When the theory is published, her life changes forever. Shunned by the scientific community, Marty sets out to discover the meaning behind a series of recent murders committed using the very techniques she wrote about. But instead of unearthing a psychotic human, Marty stumbles into the final act of an ancient struggle that has gone unresolved for more than twenty-thousand years. The ancient cult is alive and functioning in the modern world. And now they are after her...