Mientras Duermes is one of those movies that scares people only if the viewer uses no critical thought to analyze what they're watching. Like, none at fucking all.
Despite great production value and moments of tension, the writing is horrible. Alberto Marini is either an extremely misogynistic person or he thinks stalkers only stalk oblivious women in towns with bad cops. Either way, the character development in this movie is shit. Clara is illogically clueless and apparently doesn't know her…