Ancient Echoes (An Archeological Thriller)

Over two hundred years ago, a covert expedition shadowing Lewis and Clark disappeared into the wilderness of Central Idaho. Now, seven anthropology students and their professor vanish in the same area. The key to finding them lies in an ancient secret, one involving alchemy, gold, and immortality...a secret that men throughout history have sought to unveil.
Michael Rempart is a brilliant archeologist whose colorful and controversial career has earned him admiring fans and implacable foes, but he is plagued by a troubling sense of the supernatural and a mysterious spiritual intuitiveness. Joining Rempart in this adventure are a CIA consultant on paranormal phenomena, a washed-up local sheriff, and a former scholar of Egyptology. All must overcome their personal demons as they attempt to save the students and, ultimately, the world.