Trial of the Underkeep: A D&D 4E Adventure

Trial of the Underkeep is a Dungeons & Dragons adventure optimized for 4th edition. Some things are better left buried and entombed, like an entire castle that slid into the earth 1000 years ago, hiding its shameful secrets. It was only a matter of time until it its doors were blundered upon and unsealed, unleashing unimaginable horrors upon a small town. What unknown abominations stir in the slimy subterranean castle? Something has punctured through from another plane of existence. It has ...