Necromancer from Mosswall.
Bald, pale and tall.
On their first encounter in Mosswall Tanith turned Vera von Drakdale into chicken and fled. He followed the adventurers to Falwur because they destroyed his lab and for obvious reasons he was a bit angry. The adventurers got in a fight with Tanith and the thugs he had hired from Leonn Pravnis and managed to capture him for interrogation. He turned out to be decent guy, though a bit shady, and they struck a deal that Tanith would help them to develope an antidote to the poison that was used on Langmar von Drakdale if in return the adventurers would let him go unharmed and safely.