It was written originally that the scene in which Cassandra Ciangherotti and Mónica Dionne appeared together they were going to give each other a passionate kiss. But due to the content of eroticism already included in other scenes, they decided to change it.
Claudia, the character played by Martha Higareda, suffers anorexia. The Mexican actress reduced her weight significantly in preparation for the role. She weighed only 36 kilograms (79 pounds) during filming.
The residence - "Casa Alquicira" - where a lot of the filming took place, is in the same piece of land where other famous film by Carlos Enrique Taboada was shot: Más negro que la noche (1975). Also, this house is in the same block where the original Even the Wind Is Afraid (1968) was made.