This House Possessed (1981)

After having a nervous breakdown, a rock singer has to spend some time in hospital. A private nurse is hired, and with her he buys a new house, a fantastic house in the country. The nurse, Sheila, can't remember the first years of her life, but this house seems strangely familiar to her. Also, there is this strange old woman who claims that Sheila's real name is Margaret. People who cause Sheila pain or who try to tell her the real story of what happened in this house, they die in strange ways: Tanya, the girlfriend of the singer, and the Library woman who wants to give her some newspaper articles. Can Sheila find out the truth behind all this and can she escape the house that possessed once and wants to possess once more?