Through subtle plotting and brutal aggression, the forces of the Nine Hells seek to corrupt or dominate all those who stand against them. These fiends, as ancient and terrible as any in the multiverse, forge armies out of the souls of the wicked and used them to enforce their iron rule. Can your adventurers stand against the might and tyranny of the Nine Hells? This supplement for the D&D game presents the definitive treatise on devils and their malefic home. Along with information about the physiology, psychology, society, and schemes of devils themselves you will find feats, spells, items, and tactics commonly employed by these infernal creatures and those who oppose them. This book also provides detailed information on various devils, archdevils, and they layers of the Nine Hells. Expanded by; Fiendish Aspects II