Princess Diana denied having anything to do with author Andrew Morton's explosive 1992 tell-all about her failing marriage to King Charles III and misery as a member of Britain's royal family. But one senior royal wasn't buying it. According to excerpts from Hugo Vickers' upcoming biography, Queen Elizabeth II, which was recently serialized in Daily Mail, Queen Elizabeth II's husband, Prince Philip, came to his own conclusion about Diana's involvement in the bestseller initially published under the title Diana: Her True Story.