The Mephisto Waltz (film)

The Mephisto Waltz is a 1971 American horror film about an occultmurder mystery. It was directed by Paul Wendkos and starred Alan Alda, Jacqueline Bisset, Barbara Parkins, Bradford Dillman and Curd Jrgens. The name of the movie is taken from the piano work by Franz Liszt of the same name see Mephisto Waltzes. Ben Maddow adapted his screenplay from the novel of the same name by Fred Mustard Stewart. The film was the only bigscreen work of veteran television producer, Quinn Martin.

Paula does not much like Duncan and especially dislikes Roxanne. While Paula is disturbed by the level of attention being paid to them, Myles is honored to be considered a friend by Duncan, who is dying of leukemia. Unbeknown to them, Duncan and Roxanne are Satanists. As Duncans physical body nears its end, father and daughter perform an occult ritual that transfers Duncans consciousness into Myles body.Myles ensuing change in personality, which includes his now being able to play the piano as well as had Duncan, is noticed by Paula, but she is initially unsuspecting of the cause. Though confused by the change in her husband, she also finds his new persona exciting and attractive. Myles soon is pursuing a career as a pianist, and is so successful that he is able to take over Duncans concert schedule. ........

Source: Wikipedia