Bertha Russell has achieved her latest victory, cementing her place at the top of New York society with her daughter’s marriage to the Duke of Buckingham. The question is no longer whether the new will supplant the old, but how best to protect and define their family's legacy. Full of intrigue, impeccable manners, and romances tested by ambition and loyalty, Season 4 of the HBO Original series delivers all the restrained drama viewers crave.