Juan Carlos Thorry is a police inspector who must solve the mystery of the death of the warden of a boarding school for young women, for which he goes undercover as a music teacher. The main suspect is the mischievous schoolgirl María Duval. A series of entanglements leads the protagonists to becoming romantically involved and to finding the culprit.
An impostor pretends to be the mother of a blind man so he can manage his assets. But things are changing because of the arrival of the person who takes care of the blind.
The daughter of a minister pretends to be a worker to conquer the opposition deputy and discover the evidence that he proposes to present against her father.
Margarita, the nun of a cloistered convent in charge of handling the lathe, this is a rotating mechanism provided with a small window through which she delivered and received things from the outside without direct visual contact, she is seduced by a Don Juan and induced to escape with him .
The young widow of the viceroy of Peru, facing the dismal prospect of either a convent or a marriage of convenience, sets out to conquer a handsome officer, pretending she’s a duende, a ghost.