pencil and story: Kovacq

Fourth volume of an erotic science fiction story, beautifully drawn by Kovacq.
Hilde has new nightmares tormenting her.
She is in a Catholic college nowadays while Father Eblis is confessing her.
Hilde confesses that she slept with her friend Virginie, who initiated her into lesbian sex.
Father Eblis calls a group of nuns to punish his sinful acts.
The punishment consists of a mixture of lesbian sex and sadistic violence.
At the end of the punishment, Father Eblis possesses her, while invoking Satan.
Hilde wakes up distraught and is comforted, first by her sister Sandra, then by the whole Kustner family.
A friend of Tara's also participates in the orgy, who ends up indulging in Filippo.
However, Hilde continues to dream of the life in boarding school of Mathilde, her double, whom she meets in a park.
Sandra begins to remember her childhood in an orphanage, where the director, Mrs. Anderson, frequently punishes her and takes her on the path of homosexuality, making her her protégé.
Meanwhile, Tara's friend turns out to be a spy for a mysterious demon (probably Eblis), capable of changing his physical appearance.
Sandra also undergoes hypnosis and remembers their parents and her father's infidelity.
Meanwhile, at the boarding school, Mathilde, Hilde's twin sister, must witness Virginie's torture during her funeral in Eblis, struck down by a heart attack.
Mathilde and Hilde reveal that they are telepathically connected.
The story is completely disconnected from the previous three volumes, despite the characters being the same.
There is mention of a fifth volume, never released in Italy.