When a man’s body washes up on the banks of a seasonal river in Peru, with only a handful of feathers, two rocks, and an artifact of indeterminate origin in his possession, an expedition is launched to determine how he died. Using these clues to divine his route into the jungle, the party discovers a surviving offshoot of a primitive tribe and something far more sinister.

Sani Natonaba's ancestors have lived in these canyons for more than seven hundred years, but they aren't the only ones. When he awakens to the bleating of his family's sheep being slaughtered, he learns that something is stalking this isolated corner of the reservation, a predator unlike any he has encountered before, one that attacks with alarming stealth and ferocity.Only his grandfather knows what lurks outside in the darkness, but a stroke has left him unable to communicate, forcing Sani to embark upon a journey into the distant past to discover the horrible truth. And he's running out of time. There's no sign of an end to the killing and already he's found claw marks and strange footprints around his home.Sani must decipher the clues hidden a millennium ago by the Anasazi before their mysterious disappearance if he's to have any hope of surviving the impending confrontation with an ancient enemy that has already hunted his bloodline to the brink of extinction.

When Dr. Lauren Allen, a communicable diseases specialist from the CDC, investigates the mysterious deaths of nearly three hundred people at a traveling circus, she discovers that the massacre is only a trial run for an attack of unimaginable proportions. Can she and the FBI track down those responsible before more lives are lost? The method of our ultimate extinction is hiding in plain sight.

A young girl vanishes in broad daylight on her tenth birthday. Her father, FBI Special Agent Phil Preston of the Child Abduction Rapid Deployment Team, devotes his life to finding her and discovers a pattern in a recent string of abductions. Dr. Les Grant leads a group of graduate students into the Wyoming wilderness in search of an unidentified Native American medicine wheel photographed by an anonymous hiker. Instead, they stumble upon a macabre tableau of suffering. Fremont County Sheriff Keith Dandridge finds himself right at the heart of the mystery when twenty-seven bodies are disinterred in the Wind River Range at the westernmost edge of his jurisdiction, with the promise of more to come. All the while, an unknown evil is summoning the men to its killing grounds, where the remains of the lost innocents are left to rot…and a fate far worse than death awaits them.