The Night Visitor

The Night Visitor Swedish title Papegojan is a 1971 Swedish psychological thriller film in English, starring Max von Sydow, Liv Ullmann, Trevor Howard, Per Oscarsson, Rupert Davies and Andrew Keir, and directed by Laslo Benedek.

The film is also notable for its unusual score by renowned Hollywood film and TV composer Henry Mancini. The music was arranged for synthesiser,woodwinds, organ, two pianos and two harpsichords, and Mancini achieved an unsettling effect by having one of the harpsichords tuned a quartertone flat.The film was released theatrically in North America in 1971 by Universal Marion Corporation UMC. It was subsequently rereleased in 1981 under the title Lunatic by 21st Century Film Corporation. ........

Source: Wikipedia