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.
María Duval
Olga Arévalo
Juan Carlos Thorry
Inspector Mario Robledo
Milagros de la Vega
Directora
Homero Cárpena
Morales
María Santos
Vicedirectora
Alberto Contreras
Gerardo
Bertha Moss
Celadora Graciela
Enrique García Satur
Sr. Arévalo
