A troubled woman commits a series of murders that exposes some dark family secrets.

1968 film by Tito Fernández

A family gathers to celebrate Mother's Day, that day a woman discuss many problems about her woman condition; husband, children and grandchildren will hear she tired and overwhelmed silenced by submission and obedience. Analysis of the family and gender roles.

In 1661 Mexico, the Baron Vitelius of Astara is sentenced to be burned alive by the Holy Inquisition of Mexico for witchcraft, necromancy, and other crimes. As he dies, the Baron swears vengeance against the descendants of the Inquisitors. 300 years later, a comet that was passing overhead on the night of the Baron's execution returns to earth, bringing with it the Baron in the form of a horrible, brain-eating monster that terrorizes the Inquisitor's descendants