I don't remember exact book name. But you can search about it. These are pretty dark stuff.
Similar things happened in new orleans, usa. French quarter is pretty known for voodoo and witch craft. And they have pretty long history about it. I want to visit that city someday. And today that city is totally dependent on tourism on witchcraft.
Germany, France, Czech, Bulgaria have pretty horrible history about it. It first started as a weapon to convert pegan, those who were practicing secretly. Later they focused more on women, mostly single women and women communities.