"MYSTERIES OF THE CASTLE: BEYOND DOWNTON ABBEY"

Special Edition of "20/20" airs Thursday, December 26, 9:00 - 11:00 pm ET on ABC

Indulge your inner Lord or Lady -- ABC's "Mysteries of the Castle: Beyond Downton Abbey" is a behind-the-butler look at the Downton Abbey world from inside the real-life English castle that inspired the cult series. Anchored by ABC News' Amy Robach, "Mysteries of the Castle: Beyond Downton Abbey," a Special Edition of "20/20," airs on THURSDAY, DECEMBER 26 (9:00-11:00 p.m., ET) on the ABC Television Network.

You don't have to be a Downton Abbey fan to love it when the "Mysteries of the Castle" are revealed on ABC. How has the relationship between owners and the help changed over the years? How has the show's pop hit status affected the real life Abbey? Did historical events inspire story lines in the series? The special answers these questions and also introduces viewers to owners of other estates putting a modern twist to British aristocracy. From the stunning beauty who will become the nation's first black Marchioness (that's one step under a duchess!), to a Duke and Duchess selling souvenirs in the basement of their castle, to a ready for reality TV family redefining what it means to be upper class, it's a no holds barred look at what it means today to be British, rich and titled.

John Green is executive producer, Muriel Pearson is senior producer of "Mysteries of the Castle: Beyond Downton Abbey."