From the back cover: The castle of Brochleah Bluff stands warden over the Coronach Marsh, but its crumbling battlements can do nothing against the curse that has plagued the lords of Broachleah for centuries. Chaos haunts the marshlands, while in the darkness, something evil and alien stirs in its sleep for the first time in a thousand years. Can the heroes prevail where even the fell might of Balor himself failed? A scenario for a group of 5th-6th Rank adventurers.