The Wererat's Well

From publisher blurb: Rats in the Well! Plague and terror in Willowford! When a small village is riddled with disease, only a company of brave adventurers can save the town from this mysterious infestation. Plunging down the well they discover wererats, wights and other terrors in The Wererat's Well - the first in Barrel Rider Games' White Box Adventures line of products. Designed for a party of 6 to 8 characters between 1st and 3rd level, you'll find a full adventure, an overview of the village of Willowford and two new monsters - all for Swords & Wizardry WhiteBox!