Downtown Abbey TV Series: The Complete First Season. After a tragedy at sea claims the life of the presumed heir, Lord Crawley is faced with the possibility that the house he’s loved his whole life might someday belong to a distant cousin he’s never met. But before that can happen he must deal with his scandalous daughter, Lady Mary – considered by many to be the rightful heir to Downton. Even the staff has opinions on the family’s affairs. And while most are devoted to the Crawleys, there are others whose selfishness and scheming do more than simply disrupt the well-oiled inner workings of the estate. As the servants’ mischief escalates, even the most faithful employees begin to imagine a different life.