Ill Met by Morrslieb

From the introduction:

This adventure is designed for players still in their first career, set a year or two after the event known as the Storm of Chaos (2523 or 2524 by the Imperial Calender). Although intended to take place in the Empire, it could be just as easily set in the forested depths of Artois in Bretonnia or the tangled woods of the Border Princes.

As they are traveling, the players find themselves coming across a Roadwarden and her captive. Their choice to either help the warden or free her prisoner will set them on a path deep into the nearby forest, where a hideous mutant holds dominion over an entire town and calls out for human sacrifice...