Learn everything you need to know about how demonic magic works and how to deal with your demon without negative consequences. Each demon has its own powers to pass on to you, and will happily whisper its secrets in your ear as long as you are willing to listen. All the secrets of the infernal spirits are now at your fingertips, with detailed instructions on how to summon spells, make pacts with demons, open the gates of the underworld, and protect yourself from the appearance of terrible beasts