Not much to recommend here: this motion picture has a few elements reminiscent of "El vampiro" (the ghostly woman walking through dark corridors, the evil surrounding the sets of the dark hacienda in contrast to the sunny exteriors, humor combined with terror) but director Fernando Méndez and screenwriter Ramón Obón were not up to that previous collaboration. Obón would still write a few fine horror scripts (as "El mundo de los vampiros" and "La loba"), but Méndez stopped directing movies two years later, after making a routine western diptych and a formulaic melodrama. The leading man (swinger Gastón Santos, rich son of the big señor of his hometown, in real life) is prettier than the whole cast, but everybody acts better than him. He plays some kind of lone ranger and detective who arrives at a gloomy hacienda where an old woman (Hortensia Santoveña) lives in fright of her dead sister's spell, objecting all intents by her young niece (María Duval) to make life happier in the country side. The few persons remaining in a once prosperous town now live in fright of the vengeful Llorona (Crying Woman), who is somehow connected to the town doctor, two statues sculptured on a strange stone, a deadly swamp and killer cowboys. Santos is a good rider though and his horse Rayo de Plata also plays a key role in the plot, while Pedro de Aguillón plays Santos' sidekick in the lines of a Sancho Panza, adding lines and slapstick here and there, intended to be funny. Unfortunately the action lacks the right spirit, be it comedy or horror, in spite of Gustavo César Carrión's funny effort to add galloping beats to his score. Nothing said if you care for stiff terror westerns with intelligent horses and haunted swamps. Then this is for you.