Hearts of Pandora. Book 4. Volumes 7-8

Oz parts ways with his saviors, Eliot and Leo, - and not in the best way - and returns to Blake and Sharon feeling upset. However, Uncle Oscar lightens the oppressive atmosphere a bit by suggesting they celebrate the successful conclusion of their outing to the academy. The next day, Oz and his companions set off to meet the head of the Great House of Balm, hoping to shed light on events from a century ago. But there they find another mystery - Blake's past, which he has never been able to forget...