2009 - The Riddle of the River [Cambridge, Bk 4] (Paperback) ISBN-13: 9781934609330 ISBN-10: 1934609331 Genre: Mystery, Thriller & Suspense 1 2008 - The Library Paradox [Cambridge , Bk 3] (Paperback) ISBN-13: 9781934609118 ISBN-10: 1934609110 Genres: Literature & Fiction, Mystery, Thriller & Suspense 3 |