You Only Have One Life to Live...Or Do You? The Reincarnation of Peter Proud is a 1975 American psychological horror film directed by J. Lee Thompson, and starring Michael Sarrazin, Margot Kidder, and Jennifer O'Neill. It is based on the 1973 novel of the same name by Max Ehrlich, who adapted the screenplay. Plot: University professor Peter Proud after experiencing a series of bizarre nightmares, comes to believe he is the reincarnation of someone else. As he begins experiencing flashbacks of an