1810 England, the height of the Napoleonic wars. It was thought that humans walked the path of enlightenment leaving monsters and dark things behind. However, those monsters and night stalkers merely hide in the darkness, as a young maid, Bernadette, soon finds out.
It's a good question, don't you think? But perhaps some questions should not be asked, lest you invoke the wrath of thy god... Or something like that.
Notice the book Angela's reading? That's where she got the William Blake Poem earlier.