Ep 6: As Time Goes By. This episode deals with the ageing process on the body and follows an American couple, Bud and Viola Mather, as they navigate the pitfalls and benefits of old age while maintaining their ranch in Kansas. Robert Winston presents, but there's no sign of Dorothy or Toto in this. It does however for some reason have a new opening sequence involving the plucky (and sometimes embarrassed looking) naked volunteers who represent the ages from 0 to 100. So as you may gather, this contains nudity. You have been warned...