Le loup des ardents | 
pick4/5 - Only in French - Level B1-2
We're in 1561 in a small village isolated by snow. A traveling doctor finds himself stuck in this village where a strange illness is decimating the inhabitants, causing them to lose their minds and to lose their limbs because of gangrene.
Fear grows among the population who is adamant at finding a culprit.
Well-written, satisfying read about human nature!
Suet624 Sounds frightening! 3mo