Archaeologists Dusty Stewart and Maureen Cole are excavating a bizarre site in the American Southwest, and the clues are tantalizing. There's a mass grave of battered women and children, a legendary assassin, a kingdom to kill for, and the site dates back eight centuries to the time of the Anasazi-an ancient and sophisticated empire shrouded in mystery.

When they discover a witch's amulet, a basilisk, their scientific study veers into the paranormal. More bone chilling is the revelation that the crushed skulls of the dead show a distinct pattern-the murderer's blows were not random, but precise. What was he looking for? As Dusty and Maureen seek the help of an old woman who can reputedly hear the voices of the dead, they begin to question whether some secrets are better left buried.

Meanwhile, in the past, Stone Ghost is hunting the primeval monster known as Two Hearts. But the legendary killer is methodic and patient, and with each new victim, it becomes clear that Two Hearts knows something that Stone Ghost does not-and it just might be an old and powerful secret worth killing for.

Can Dusty and Maureen unravel the profound mystery of an ancient evil that lurks in the shadows of their world's past and present?