From writer/executive producer Julian Fellowes (Downton Abbey) and adapted from his book of the same name, the Epix period drama Belgravia tells a story comprised of secrets and scandals amongst the upper class of London society in the 19th century. After attending the now legendary ball hosted by the Duchess of Richmond, on the eve of the Battle of Waterloo, the Trenchards find themselves on a path where the past can threaten everything. During this interview with Collider, show creator Julian Fellowes and executive producer Gareth Neame talked about how this particular story came about, why the Duchess of …