Islandia Vol 3 - Marc Vedrines

Jacques is dead, burned at the stake for sorcery by terrified villagers. The truth, however, is that Jacques never existed, and was merely the reincarnation of all-powerful Icelandic sorcerer Grimu. His soul, freed at the moment of his second death, has possessed the local magistrate, and his thirst for vengeance makes him commit terrible deeds. The island's authorities are after him, though, and far worse than that: God himself has turned his eye towards the man who defies him...