Agatha Heterodyne and the Chapel of Bones, the eighth volume of Girl Genius, begins with an opera — The Storm King — which gives us background on the conspiracy unfolding and some parallels to current relationships. Meanwhile, back in Mechanicsburg, Agatha takes on a tough prison demeanor and finds an old "friend", while Gil is adopted by the Jägers and the Jägerfräulein at Mamma Gkika's. Alliances are formed inside and outside of Castle Heterodyne in surprising ways while Baron Klaus Wulfenbach fights both his injuries and his doctor to contain what he sees as an immediate threat from The Other. It's a race between the castle-savers and the castle-killers as Agatha races through dangerous corridors in her damaged family home.