Book The Adversary Cycle

The Keep

by F. Paul Wilson · first published 1981

The Keep is a 1981 horror novel by American writer F. Paul Wilson. It is also the first volume in a series of six novels known as The Adversary Cycle. It appeared on the New York Times Best Seller list and has been adapted into a film by Michael Mann in 1983 and as a limited series of comics in 2006.

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