Vice Versa (1981) - Season 1 Episode 5 The Letter
Overview: The magic of the Garuda stone is still working on Dick Bultltude and his father, Paul, who are occupying each other's bodies. "Dick's" problems at school have been made worse by his rejection of the affections of Dulcie Grimstone. "Paul," in London finds that the middle-aged body he's inhabiting won't stand his pace of life and is taken ill.