Sir Robert Rannaldini, the most successful but detested conductor in the world, had two ambitions: to seduce his ravishing nineteen-year-old stepdaughter tabitha campbell-black, and to put his mark on musical history by ...Sir Robert Rannaldini, the most successful but detested conductor in the world, had two ambitions: to seduce his ravishing nineteen-year-old stepdaughter tabitha campbell-black, and to put his mark on musical history by making the definitive film Of Verdi's darkest opera, don carlos.