The Devil’s Only Friend by Dan Wells 1 June 2015 by librarian 0 “The Devil’s Only Friend” by Dan Wells. Title: The Devil’s Only Friend Series: John Cleaver Number in Series: 4 (four) Author(s): Dan Wells Cover Artist: n/a Language: English Publisher: Tor Books Published: June 2015 ISBN-10: 0765380668 ISBN-13: 9780765380661