Thomas Siddell 
Gunnerkrigg Court Vol. 4: Materia [EPUB ebook] 

Antimony Carver and her best friend Kat continue to uncover terrible secrets about their eccentric school, Gunnerkrigg Court, as their second year comes to a close. If navigating the dangerous world of teenage relationships weren’t hard enough, Annie and her fellow Mediums In Training learn that there is far more to their powers than they could have imagined. They must take things into their own hands if they want to get to the bottom of the Court’s dark past! Archaia presents the fourth installment in the award-winning series of collected volumes of Thomas Siddell’s internationally popular webcomic.