Father Luis Lastra is a young priest who does his job in the village of Peñascosa. There he meets Marta, a beautiful parishioner very interested in religious matters, so much that she convinces the priest to accompany her to the convent to become a cloistered nun. Along the way, they have to stop at an inn for the night and that's where Father Luis will test his faith.

The strange disappearance of the dogs of his neighbors leads Juan to investigate the case on his own. It ends up finding out that the author of the robberies is a young woman called Eloísa, the cocky daughter of a scientist who uses dogs to create an antidote against sleep. Juan and Eloísa fall in love, but he will ask her to leave her luxurious mansion to live only with his salary.

1954 film by Luis Lucia Mingarro

Madrid, Carnival Sunday. A night watchman finds the body of a woman, a rich and greedy moneylender who has apparently been murdered. The prime suspect is a watchmaker who owed her a lot of money.

Madrid, late 19th century. A wealthy woman is found murdered in her home and her maid seems to be the main suspect; but her statement further entangles the case.

In 1918, a young woman is taken to a coastal resort by her parents to find her a suitable husband.