Eiren Von Daaknau

A minor character from the Heart of Midnight novel, Eiren is a medical researcher and butcher turned vivisectionist with a sadistic streak. He tortures people both for the thrill and the knowledge he might learn. He lives in Skald and is a friend of Harkon Lukas. He workks out of his cellar. Anna is or was one of his victims.

Casimir Lukas conspired with Eiren Von Daakau to poison Harkon Lukas and deliver him to Eiren's torture chambers. Eiren made some poison but did not actually participate in the act of poisoning and attacking Harkon. Although Casimir fails and dies, but discovery of Eiren's involvement is never mentioned inn HoM.