Era I, chapter 170 : Quan seems to know more about the demons and the strange device Irmhild operates Era I, chapter 177 : Quan investigates the catacombs for damage after the earthquake. Era I, chapter 179 : Quan keeps an eye on things while Irmhild talks with Radovan. Era I, chapter 181 : Quan feels they're losing control and warns Irmhild. Era I, chapter 182 : Quan learns serious problems are interfering with the work in Fjellsinge. Era I, chapter 185 : Quan comes up with a plan to deal with the visitors. Era I, chapter 186 : Quan attempts to stop Grey.