From the RedBrick LLC website: The Adventure Compendium revises and expands all material from the adventures Mists of Betrayal, Terror in the Skies, Infected, Shattered Pattern, Blades, bits and pieces from Prelude to War, plus a number of additional Adventure Hooks and advise on how to run these adventures, based on almost a decade of feedback from the community. Of course, we exterminated the weak spots of the adventures to make them more playable.