To the watching world, the 32-year-old heir to the throne and his fresh-faced 20-year-old bride were a picture-perfect couple who would secure the future of the Royal Family. However, Charles and Diana's 1981 marriage was not quite the fairytale that it seemed, and was plagued by family pressure, whispers of infidelity and scandal. This documentary, part of Five's Revealed strand, uses testimony of those who were there to delve deeper and ask: was the wedding of the century doomed from the start?