She wanted an adventure. She found fear, betrayal and a fight for survival.

It's the kind of case that chills FBI agent Caitlyn to the bone - missing person, college student, beloved daughter of a world leader in biotechnology. Last seen on a cruise with friends, there is just one possible lead: reports of a stranger who may have lured the archaeology student off the ship and deep into the jungles of Guatemala.

When Caitlyn follows her hunch into the jungle the trail takes a surprising turn into the very heart of darkness . . .

From the ancient mysteries of a Mayan temple to the sinister secrets of modern medicine, Caitlyn Tierney uncovers crimes that have been buried too long and too deep.

The standalone sequel to New York Times bestsellers Blind Faith and Black Sheep.