From the back cover:
Patrons. More than mere supernatural benefactors, they are the schemers whose plots set worlds in motion. They are beings who amuse, enthrall, and terrify the mortals who dare to bargain with them.
You, dear reader, will find thirteen new and fully developed patrons for the Dungeon Crawl Classics Role Playing Game. Included are 40 new spells, more monstrous minions, and new spellburn and patron taint tables to use in your DCC campaign!