Oh boy, this is super creative. I think I need to play test this myself to understand how to apply the Werewolf mechanics, but I am *very* intrigued by this. You did a great job setting up a fun mystery and crafting unique characters (who are just similar enough to throw off the PCs) in very few words. I really like the "personality-physical" description template. I wonder how it would play with the GM playing the townsfolk accusing each other *and* The Horror.
A note. The PDF is like 50 MB and the text appears to have been scanned in (you can even see through to the other side). While a nice design touch, it is kind of a large file and make accessibility harder. Consider generating a PDF straight from software if you can or optimizing the PDF and adding OCR.