The Night Guard(El Vigilante)

Humberto works as a night watchman at a remote and desolate construction site. One night he becomes, unwittingly, the sole witness to a cover up. Afraid of being retaliated against lest he come forth, he decides to keep quiet. Gradually and without him being aware of it, Humberto ends up inflicting on his family the same violence from which he´s running away.