Ania Pieroni (born 1957 in Rome) is an Italian actress from the late 1970s and early 1980s. Description above from the Wikipedia article Ania Pieroni, licensed under CC-BY-SA, full list of contributors on Wikipedia.
After a doctor kills his mistress and himself while researching the mysterious previous owner of his Boston home, his colleague, Dr. Norman Boyle, takes over his studies and moves his family into the Boston mansion. Soon after, Boyle's young son Bob becomes plagued by visions of a young girl, who warns him of the danger within the house.
A razor-wielding serial killer is on the loose, murdering those around Peter Neal, an American mystery author in Italy to promote his newest novel.
A young man returns from Rome to his sister's satanic New York apartment house.