Six seasons, three feature films and a whole 15 years later, it's finally the end of Downton Abbey. The year is 1930 and Lady Petersfield, played in full matriarch mode by Joely Richardson, is hosting a huge party in her London palazzo to which the Crawley clan have been invited.
Except—hang on—Lady Mary has just received her decree nisi from her second husband, the racing driver Henry Talbot, and is therefore, shock, horror, a divorced woman in a world in which divorce is still taboo. Lady Petersfield only hears the news once the Crawleys have arrived and, hilariously, forces Lady Mary and her parents to hide under the stairs so as not to shock the Duke and Duchess of Connaught who are incoming.
