From the back cover: What began as a subtle sickness has now spread into a full-blown contagion of magical origins around Roslof Keep! Although protected from the outbreak by their Mithel Standard, the Company of the Ivory Scimitar is now challenged with not only continuing their quest to defeat the Dungeon but also saving the town that they have grown to love. With unlikely allies forming from the other Mithel Companies, as well as unforeseen help within the labyrinth itself, the Ivory Scimitar must now take on the perilous task of curing the Violet Corruption while trying to discern the nature of its cause from somewhere deep within Mithelvarn's mad dungeon of self-propagating monstrosities! User summary: Includes: Two-panel removable cardstock cover with color interior maps (4 pp.) Gazetteer NR3 The Violet Corruption & The Infernal Machine booklet including new monster entry (Jai-Ruk) plus "Dungeon Master's Notes & Suggestions on Running the Dungeon" article (12 pp.) ROS3 Curse of the Violet Corruption! adventure booklet (24 pp.)