Thuringwethil

Thuringwethil, Messenger of Angband and Tol-in-Gaurhoth.

This female Vampire was a favorite of Sauron and served as his messenger during the Quest of the Silmaril in the First Age. It was her shape that the Half-maia Lúthien used to gain entrance to Angband, for Thuringwethil( S . "Woman of the Secret Shadow") lost her powers and her cloak of shaping when Tol- in-Gaurhoth (S. "Isle of Werewolves") fell and Sauron fled, he himself taking the form of a Vampire.