“Agatha H and the Clockwork Princess” by Phil and Kaja Foglio.
Title: Agatha H and the Clockwork Princess
Series: Girl Genius (novel series)
Number in Series: 2 (two)
Author(s): Kaja Foglio, Phil Foglio
Cover Artist: Tom Kidd
Language: English
Publisher: Night Shade Books
Published: April 2012
ISBN-10: 1597802220
ISBN-13: 9781597802222
Notes: Novelizations based on the Girl Genius webcomic.