I'm a librarian who loves anime, manga, and reading a wide variety of genres.
It's apparently been on Prime for a little over a week now. I haven't been using my streaming services much lately and hadn't noticed. Anyway, I rewatched it, and it was just as enjoyable the second time around. I got to worry less about Marta and just pay attention to how all the pieces came together.
If you haven't seen it, I'd recommend it if you're into traditional mysteries. Two bits of warning: there's on-screen vomiting (the one during the Big Reveal is so gross I just shut my eyes during both my first and second viewing) and one scene in which a spider walks across a person's face.