15 books in series

Girl Genius

Girl Genius is a 15-book series with 15 primary works first released in 2001 with contributions by Phil Foglio, Mark McNabb, Kaja Foglio, Brian Snōddy, and Cheyenne Wright.

#3
Agatha Heterodyne and the Monster Engine (Girl Genius, #3)

2004 • 11 Readers • 128 pages • 4

#4
Girl Genius

2001 • 12 Readers • 102 pages • 4.3

#5
Agatha Heterodyne and the Clockwork Princess (Girl Genius, #5)

2006 • 11 Readers • 109 pages • 4.4

#6
Agatha Heterodyne and the Golden Trilobite (Girl Genius, #6)

2002 • 8 Readers • 150 pages • 4.2

#7
Agatha Heterodyne and the Voice of the Castle (Girl Genius, #7)

2001 • 9 Readers • 128 pages • 4

#8
Agatha Heterodyne and the Chapel of Bones (Girl Genius, #8)

2009 • 10 Readers • 144 pages • 4.6

#9
Agatha Heterodyne and the Heirs of the Storm

2010 • 10 Readers • 144 pages • 4.3

#10
Agatha Heterodyne and the Guardian Muse

2013 • 8 Readers • 144 pages • 4.3

#11
Agatha Heterodyne and the Hammerless Bell

2012 • 6 Readers • 4.5

#12
Agatha Heterodyne and the Siege of Mechanicsburg

2013 • 4 Readers • 4.3

#13
Agatha Heterodyne and the Sleeping City

2014 • 5 Readers • 3.8

#15
The City of Lightning

2016 • 1 Reader • 4

#16
The Incorruptible Library

2017 • 2 Readers • 122 pages • 4.5

#19
Cover 3

Sparks and Monsters

2020 • 2 Readers • 122 pages • 4

#20
Cover 8

The Exorcism Engines

2022 • 1 Reader • 128 pages • 4