Request #429 From Daniella

I vaguely remember reading this book about a kid who moves to a new house with his parents. The kid starts getting emails and messages from someone and there’s also somehow an Ouroborus involved (also might have been on the book cover but at this point I might be making that up in my head). I also remember there being a part at the end where the mom gets like hypnotized and there’s a waterfall that breaks the spell or something like that.