A scenario from AEG's Adventure Keep series, it is designed to be used with their Undead sourcebook. Characters need to be about 5th-8th level.
Publisher's blurb: "A ruined garrison that is infested with Undead and the true source of an ancient evil emanates from Covenant Hill. Hearty PCs must root it out and destroy it, before it engulfs the valley. At the end of their quest, lies a difficult decision between justice? and greed."
Author: Ree Soesbee
Publishers' Reference: AEG8344