""The Reign of the Evil One"" is a novel written by Swiss author Charles Ferdinand Ramuz. The story is set in a small mountain village in Switzerland, where the arrival of a stranger named Pierre-Louis brings about a series of strange events. Pierre-Louis is a charismatic and mysterious figure who quickly gains the trust and admiration of the villagers, but as time goes on, it becomes clear that he has a dark and sinister agenda. As Pierre-Louis begins...