This book takes a look at the sinister, manipulative cruelties of Hell's scions - the devils. How do devils manipulate mortals to serve their evil plans? What eldritch powers can a mortal gain by signing an infernal contract - and what does he give up in the process? What are Hell's plans for the world of Pathfinder? All these questions and more are explored in Volume 1 of the Book of the Damned, along with numerous, brand-new devils and infernal magic designed to vex and torment your players.