The 13th Circle is an epic battle with one of the archfiends of legend, the demon Baphomet. Designed for Tier 3-4 characters (levels 15-17) and set in the Dread Domain of Kachelior, the adventure requires the party to navigate the mysterious and maddening mazes that protect the demon's castle, and battle fiends of all kinds to reach his throne room. But will they discover the truth of his machinations? Word has spread through the small collection of towns within the Grey Shade that a cult of Baphomet has been preparing something for their master within his palace. The players will travel to Baphomet’s palace, and make their way through the massive forest maze that surrounds it. They will find the corpse of one of the previous heroes enshrined near the center which hints towards the true purpose of the cultists. They will then have to infiltrate the dread palace either stealthing or fighting their way through the defenses. They then must make it past Baphomet’s Lieutenant, Aphalos, the Godeater. The characters defeat Aphalos or persuade him to leave his master to his fate. Once they enter the chamber, Baphomet’s plan is made clear. He wishes to create a maze within time, thus trapping this world in the same cycle of pain and doom as before.

Welcome to Baldur's Gate, a city of ambition and corruption. You’ve just started your adventuring career, but already find yourself embroiled in a plot that sprawls from the shadows of Baldur's Gate to the front lines of the planes-spanning Blood War! Do you have what it takes to turn infernal war machines and nefarious contracts against the archdevil Zariel and her diabolical hordes? And can you ever hope to find your way home safely when pitted against the infinite evils of the Nine Hells?

The Underdark is a subterranean wonderland, a vast and twisted labyrinth where fear reigns. It is the home of horrific monsters that have never seen the light of day. It is here that the dark elf Gromph Baenre, Archmage of Menzoberranzan, casts a foul spell meant to ignite a magical energy that suffuses the Underdark and tears open portals to the demonic Abyss. What steps through surprises even him, and from that moment on, the insanity that pervades the Underdark escalates and threatens to shake the Forgotten Realms to its foundations. Stop the madness before it consumes you! Note for DMs: This adventure is not for the faint of hearted, to run or to play. The module starts with 10 NPCs traveling with the party through the grueling Underdark. This number can grow. The encounters within the book are often incredibly deadly for the characters that would be going through it. This is because the module expects them to run or talk their way through the events, or, in some cases, the module expects them to lose. If your players aren't the kind of party to run, talk, or surrender, do not get this adventure. The module almost requires that you use milestone leveling because the experience provided does not commonly get players to the levels they should be once they get to certain milestones in the story (7th when they leave the underdark, 15th when they face the demon lords.) Good luck and happy questing.