She was the devoted royal mistress and the notorious 'third person' in Prince Charles' troubled and tragic marriage to Diana, Princess of Wales. No-one doubts the love between Prince Charles and Camilla Parker-Bowles, but as she becomes his wife - and possibly, one day, Queen of England - there is a need for a much more perceptive picture of this often-vilified member of the Royal family. Balanced, engaging and informative, this documentary uses especially shot and rarely seen footage to explore Camilla's sensational and intimate involvement with the very heart of the British monarchy.