Devilry

From publisher blurb:

Those who have read Demonology have encountered those demons of The Pit and read about their plight. Now learn about the devils that condemned the demon lords and their kin to that place! Here you will the likes of the lowly imp and the great pit fiends! Here too you will learn of the great Archdevils and their powers. You will read the histories of such beings as Belial, Moloch, Silver Tongued Mephistopholes and the great queen Agrat. Even more important than these, you will learn the story of Lucifer himself! The wait is over! You have learned Demonology now it’s time to experience a bit of Devilry.