Diavola by Jennifer Thorne

Oddly enough, I wasn't all that impressed by Thorne's last book, Lute. But this one ... this one rocked my socks off.
I started it last summer, put it down, and for various reasons never picked it up until now, though it never left my mind. Many books do, some almost immediately upon finishing. This book stayed with me for months in exquisite detail until I came back to it. Like a proper possession, it just wouldn't let me go.
And what a book, what an awesome study in familial and haunted terrors.
A family summer vacation in Italian countryside in a gorgeous, rented villa sounds like a dream come true. But this is a dream that very quickly turns into a nightmare because shared DNA can only take people so far, and Anna, the protagonist of this novel, categorically doesn't belong with her family. Which is a nightmare in and of itself, ramped up into high gear when she begins to suspect that something is very, very wrong in the villa they are staying in.
Leaving it all behind will not be enough.

I'll say no more to avoid ruining any surprises. But do read this book and find out for yourself. From beautiful scenery to strikingly engaging writing, this slow burning descent into madness is a thing of beauty. A modern classing of haunting-themed literature. A hauntingly good book. It will haunt you! Choose one but all apply. Recommended.

P.S. A small thing but ... if you're going to use a real-life artist who died in 1493, don't date his artwork to ≈1500. That's either wrong or lazy. Just pick a year.