Best I can give is 5*. The movie itself is not terrible and even that bad, but there are some serious problems. It's predictable. Second biggest problem is the cast, I couldn't care less about those guys (I blame the writer, cuz actors are good). As it goes, movie is getting better and better, there are some aspects that are awesome: idea, sound, scenes, costumes, lights... but overall I don't recommend this if you are not a fan of "puzzle movies" genre. Since I love Saw, Escape Room..., and in general this type is my cup of tea, I liked it, but I wouldn't recommend with a full heart this, if you are not mistery lover.