Memnoch der Teufel.

Memnoch the Devil (1995) is a horror novel by American writer Anne Rice, the fifth in her Vampire Chronicles series, following The Tale of the Body Thief. Many of the themes of this novel and in large part the title are re-borrowed from the 19th-century gothic novel Melmoth the Wanderer by Irish author Charles Maturin. In this story, Lestat is approached by the Devil and offered a job at his side.