Joan Rivers was known all over the world--from the Palace Theater to Buckingham Palace, from the bright lights of Las Vegas to the footlights of Broadway, from the days of talkies to hosting talk shows. But there was only one person who knew Joan intimately, one person who the authorities would call when she got a little out of hand. Her daughter and best friend, Melissa. Joan and Melissa Rivers had one of the most celebrated mother-daughter relationships...