Edward Wozny, a young investment banker, volunteers his services to the Wents, the duchess and duke of Bowmry, two of the firm's biggest clients. Since he assumes they require his financial expertise, he is exasperatedand then intriguedto discover they wish him to catalogue a collection of ancient books in the attic of their New York apartment. Captivated by the library of rare manuscripts, Edward finds himself oddly content in this mystifying world of words. A special request adds extra urgency to the assignment: he is asked to find a possibly mythical codex by 14th-century monk Gervase of Langford, A Viage to the Contree of the Cimmerians. Most scholars believe that the textwhich predicts the coming of the apocalypse and may conceal Went family secretsnever existed, and that view is shared by Margaret Napier, a hard-nosed graduate student whom Edward enlists to aid him in his daunting task. Fixated on locating the codex, Edward becomes equally preoccupied with MOMUS, an intricate, frighteningly vivid computer game. Cyberworld and real world are more connected than Edward realizes, and he gradually discovers that the game is intimately related to his literary sleuthing. A trip to England and a well-orchestrated final twist bring this intelligent, enjoyable novel to a fittingly understated conclusion.