Flight of the Feathered Serpent (Three Keys Series Book 3)

An old and deadly enemy. A danger reaching beyond life's boundaries. A love destined for all eternity...
A silent killer sweeps humanity, consuming its life force, threatening an eternal reign of darkness. After narrowly escaping this shadowy force in the highlands of Scotland, New York psychiatrist Sara Forrester is tasked with finding the second key of life by unlocking the riddles of Mayan myth in the shrouded depths of the Yucatan jungle. As Sara and her team are plunged into a history rooted in magic and mystery, they struggle to find light in the darkest corners of the unfamiliar. At risk are the billions of lives on earth and a future Sara longs to keep with the man she bonded with before either were ever born.