The Ruined Abbey of Saint Tabitha

Publisher blurb: Years ago, a sudden earthquake buried the Abbey of Saint Tabitha, and ever since evil things stalk the hills east of Dunkirk. Can a novice group of heroes reclaim the abbey for law? For 3-5 characters of 1-3rd level. Compatible with Pits & Perils RPG but easily translated into any old-school role-playing system.