Beyond the Door II (1977) on Netflix

Dora Baldini, her husband Bruno Baldini and her son Marco move to a huge house that belongs to her. Dora lived in this house with Marco and her former husband, who was drug addicted and committed suicide. The house is empty since them and Bruno, who is a pilot, has decided to move to the place claiming it is close to the airport. Soon Marco is possessed by the ghost of his father and Dora is haunted by the house. She tells to Bruno that they need to leave the house and she is afraid of her son, but he believes Dora relapsed since she had a breakdown when he husband died. Why the vengeful spirit is seeking revenge?