City of Iron. The Searchers Trilogy, #1

Something is out there, and everything we know, everything we believe, everything we are - is doomed. Their identities are a secret. Their mission does not exist. There is no one they can trust.not even the one man pulling the strings. A trio of uniquely talented CIA operatives, their mission to explain the inexplicable: to debunk the work of psychic tricksters, magicians and frauds whose calculated deceptions pose a serious threat to security and the national psyche.
But the strange disappearance of an artist in New York , coupled with the discovery of elevn charred bodies in an Adirondack mountain lodge - corpses that forensic evidence indicates are centuries old - suggest to agents Laika Harris, Tony Luciano, and Joseph Stein that there is more to their assignment than they've been led to believe, that the truth they seek is rooted in a conspiracy that stretches back countless millennia and is centered around the release of the most powerful prisoner the world has ever known - a conspiracy that could shatter every belief about the origin of man.and God.