Princess Diana's marriage to King Charles has been well-documented, as has the monarch's relationship with Queen Camilla. Early in Diana and Charles's romance, the princess was photographed spending time with Camilla, leading many to wonder why the pair had been communicating with one another. According to one royal biographer, the reason might be more straightforward than many initially believed.
In the new book Divide and Rule: Royal Women and Their Battles, author Catherine Mayer explores Diana and Camilla's unexpected meetings.
