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Demon Queen’s Enclave is an adventure designed to challenge characters of 14th level through 17th level. It can be used as a continuation of adventure P1: King of the Trollhaunt Warrens, but it can also stand on its own.
Long ago, the drow unwittingly built a small enclave above a subterranean realm where a corrupted finger of the Shadowfell touches the world. Once home to a vampire exarch of Orcus, this dead zone still contains unspeakable malevolence that seeks to create terrifying new soldiers for the Demon Prince of the Undead.