Murder Me, Monster (Muere, monstruo, muere)

synopsis

Rural police officer Cruz investigates the bizarre case of a headless woman's body found in a remote region by the Andes Mountains. David, the husband of Cruz's lover Francisca, becomes the prime suspect and is sent to a local mental hospital. David blames the crime to the inexplicable and brutal appearance of the "Monster", and its victims' plea "Murder Me, Monster."

As more deaths happen - Cruz must determine who is the real monster.