“Dark Lord of Derkholm” by Diana Wynne Jones.
Title: Dark Lord of Derkholm
Series: Derkholm
Number in Series: 1 (one)
Author: Diana Wynne Jones
Cover Artist: Jos. A. Smith
Language: English
Original Publisher: Gollancz
Originally Published: October 1998
Publisher: HarperCollins
Published: April 2001
ISBN-10: 0064473368
ISBN-13: 9780064473361