Keys to the Demon Prison by Brandon Mull 1 March 2010 by librarian 0 Title: Keys to the Demon Prison Series: Fablehaven Number in Series: 5 (five) Author(s): Brandon Mull Cover Artist: Brandon Dorman Interior Artist(s): Brandon Dorman Language: English Publisher: Shadow Mountain Published: March 2010 ISBN-10: 1606412388 ISBN-13: 9781606412381