Dead in Thay is a D&D Next adventure for 6th- to 8th- level characters. Participants in D&D Encounters receive supplementary material, including maps, stickers for tracking progress, NPC cards, and a unique d20 corresponding to this adventure. (If you use this adventure in a home game, the material for playing with and coordinating multiple groups is irrelevant to you.)
Dead in Thay is a tribute to Tomb of Horrors, The Ruins of Undermountain, and other killer dungeons. The monsters, traps, and hazards in the adventure create a deadly challenge.