I loved this movie! It builds tension right from the start and scared the crap outta me over and over again without being cheap. This is a well-built movie all around and I can't believe I've never heard of it!
I was about to try to explain the premise but I myself went into this completely blind and I think it's better that way, honestly.
Well shot, well acted, great premise, great score, scary as hell, dramatic, and intense. If you like scary movies that rely more on tension than gore or jump scares, I can't recommend this enough!
A few things: 1. It's in Italian with English subtitles so if you can't stand subtitles then I feel really bad for you for missing out on all the wonderful subtitled horror titles out there, especially from Asia, but I get it - some people just don't like subtitles. 2. IMDb inexplicably says this is a Mexican movie when it's in Italian and set in Italy, so ignore that. 3. The movie starts rather abruptly and you don't see the title card or any credits until almost ten minutes in. It felt a little weird but ultimately I liked just being thrown into the movie like that.
The worst thing I will say about this movie is that it slows down a little at around the three quarter mark when I wanted the tension to keep going and building, but that's a tiny gripe.
As of this writing in late June 2021, it is on Amazon Prime, which is where I watched it. It's worth buying or renting from wherever, in my opinion. Highly recommended.
Edit: Looks like it's gone from Amazon, but you can watch it on Tubi for free now (3/25/2022)