Momentos de Prazer e Agonia (1983)

A small-town school teacher leads an apparently normal life, including a longtime boyfriend. But she secretly has several lesbian affairs until the women in her life start being brutally murdered.

Marília, leaving behind a neurotic friendship with Renata, moves to a country town where she starts teaching at the local school. She meets Rodolfo, a wealthy farmer, and starts relationship with him. One day, Renata and her husband show up at her home and on the same day Rose, one of her students, is murdered. The incident creates an atmosphere of panic in which everyone is a suspect.