The knighthood of Zion

Zack heikel learns that the ring he found in an old hilltop mansion can produce an image in a flux field when its mechanism is exposed to the earth's atmospheric static electricity. He traces the image in the flux to the ruins of a third century castle and while searching for the artifact he falls into a subterranean burial ground. He finds what he is looking for but discovers that he is trapped in the cavern. desperate, and near death, he follows a strange animal out to freedom. Returning to the states, he is approached by two burly CIA agents, who confiscate the item. Upon examination they calim that the artifact is none other than, the Holy Grail. --from publisher.