 He changes his mind on family matters, however, when he meets Professor Appleby on a train and hears his theories on eugenics.Disowning his family, he adopts the awful Horace, in "Bill the Conqueror".A sinister character appearing in "Psmith, Journalist", Mr Parker could be any age between twenty-five and thirty-five, with a smooth, clean-shaven face, and a cat-like way of moving.