When devils sing: Quand chante le diable

The atmospheric setting really immerses the reader in a world of shadows and secrets. I'm curious what inspired the author to craft this particular mood and setting.

Their moral ambiguity made me question what I would do in their place. Was anyone else surprised by their actions or sympathized with their struggles?

The blend of horror and mystery felt seamless, but I wonder whether the supernatural was always meant to be a metaphor or if it was meant to be taken literally throughout.