Overview
The Other Hell is a 1981 Italian horror film written and directed by Bruno Mattei and Claudio Fragasso and starring Franca Stoppi and Carlo De Mejo.
Plot
Sister Cristina is lost in the catacombs under the convent while searching for Sister Assunta. She finds her in what appears to be a laboratory in the convent's morgue. While Sister Assunta is preparing a nun's corpse for embalming, she relays the dangers the nuns face in temptation by Satan with lustful desires; she also tells a story of a child born dead in the convent to a nun who fornicated with the devil, and events surrounding the murder of the previous mother superior, Sister Florence. She claims Sister Florence's ghost still haunts the convent, calling the name of the nun who murdered her. Then, as if under a supernatural influence, she horribly murders Sister Cristina before dying herself. Mother Vincenza discovers the corpses of both nuns and justifies the deaths as accidental to the investigating Father Inardo. However, Sister Rosaria shouts that the devil lodges in the convent and is rebuked by Mother Vincenza. Sister Rosaria bleeds from her mouth when Father Inardo administers communion; afterwards, locked in her room, she experiences the symptoms of stigmata. Father Inardo is purifying the convent with the Mother Superior and the rest of the nuns in tow, until they are alerted by the cries of pain of Sister Rosaria. They rush to her room to find the nun has been horribly murdered, the bed and walls covered in blood.
Father Inardo and the Bishop, in order to unravel the situation, charge young Father Valerio with the investigation. He soon arrives at the convent where he discovers, in recent times, other supernatural events seem to have occurred in addition to the death of the previous nuns. Father Valerio understands that the whole environment is dominated by the dictatorial figure of Mother Vincenza and frequently clashes with her during the investigation, coming to suspect she is hiding something. After various vicissitudes, including the deaths of Father Inardo and the gardener Boris, Father Valerio discovers that the basis of the bloody facts is Elisa, the illegitimate daughter of Mother Vincenza. She has been kept segregated from her mother in a hidden room of the convent, her face horribly disfigured.
From Wikipedia (CC BY-SA 4.0).