Quick recap
Demons trapped for millennia on the island of Hybras, outside time, start appearing on Earth, and 14-year-old Artemis predicts where. Holly, now with Section Eight, goes to find him. The imp No. 1 turns up in Sicily and falls into the hands of Minerva Paradizo, a girl genius who wants to study him. After a lot of back-and-forth, Minerva gives up, but her hired gun, Billy Kong, wants revenge on demons and rigs a bomb. The group ends up on Hybras, where leader Leon Abbot crowns himself king. Holly dies in the battle, and Artemis brings her back by bending the spell. They return to the present, but three years have passed, and Artemis and Holly have swapped one eye each.
No spoilersOpens once you mark the title as seen.