Since the moment of Original Sin, man has been mortal, trapped in time, and able only to grasp tenuously at the concept of eternity. That is, unless that man has been able to study and practice the arcane seventh-century teachings of Agrippolos the Left-handed, notably his major work, The Chronomicon Novum. Then the Vast Unknowable is his. But man must beware; failure to master the teachings completely can result in a fate far worse than mere mortality... Two strangers, a male sportswriter and a female student of the occult, buy a house together because, not in spite of, the fact that it is reputed to be haunted. In so doing, they become entangled in the history of the family who built the place to use as a venue for an experiment in controlling time. They also discover that the house now seems to have developed a life of its own, one which bears a distinct resemblance to the evil personality of the defrocked Seventh Century monk and his twisted philosophies on the nature of Sin and Eternity.