[en] [Girl Genius Novels 03] • Agatha H and the Voice of the Castle Night Shade
[en] [Girl Genius Novels 01] • Agatha H. and the Airship City Night Shade
[en] [Girl Genius Novels 03] • Agatha H and the Voice of the Castle Night Shade
[en] [Girl Genius Novels 01] • Agatha H. and the Airship City Night Shade