This is a historical case shrouded in mystery, which history never managed to solve. And as the film warns in the opening credits, it is a fictional film based on real events and these real events are treated quite accurately, explaining the more accepted version of the murder of don Juan de Escobedo, secretary of don Juan de Austria, half brother of King Felipe II of Spain. Sprinkled with fiction such as the beautiful love story of the Moorish girl executed for having tried to poison Don Juan de Escobedo (a fact that was true, the film simply creates a background story for the girl). Excellent film that, those who have read about this topic, will greatly enjoy.