The first book in a new series about an orphan boy who discovers he is part of a secret army that protects the world from a race of shadowy monsters.Grey placed his finger in the middle of the shadow.''What''s this?'' he asked.Denizen frowned. ''It''s a shadow.''''No, it isn''t,'' Grey said. ''It''s a door.''Denizen Hardwick doesn''t believe in magic - until he''s ambushed by a monster created from shadows and sees it destroyed by a word made of sunlight.That kind of thing can really change your perspective.Now Denizen is about to discover that there''s a world beyond the one he knows. A world of living darkness where an unseen enemy awaits.Fortunately for humanity, between us and the shadows stand the Knights of the Borrowed Dark.Unfortunately for Denizen, he''s one of them . . .