A Past Shadow

From the publisher's blurb:

This is a series of three adventures set near a mid-sized city or town located on in forested hills near a frontier or wilderness areal. It is designed for a party of 4 characters of first level whom should gain two to three levels by the completion of the story arc.

The story covers the player characters discoveries and disruptions of the machinations of a mysterious person lurking in the background, manipulating people and events like a dark puppet master. Eventually the players will finally face this adversary only to discover that he too is merely a pawn of something even more sinister and deadly that left unchecked, could threaten the peace and stability of the entire region.