The Changeling (1980)

Months after the death of his wife and child in a car accident, composer John Russell (George S. Scott) retires to an old mansion which has been unoccupied for years. But John's hopes of peace and quiet prove unfulfilled, as he finds himself regularly disturbed by a strange and uncanny presence which haunts the house. Teaming up with local historian Claire Norman (Trish Van Devere), John begins to research the house's past, and soon finds secrets more terrible than he ever imagined. It is now up to John to right the injustices of the past and finally lay to rest the spirits which haunt his home.