Tonight's American Horror Story: Coven episode, "Head", is the season's last before going on a month-long holiday break. Before tuning in, FX has released the latest behind-the-scenes featurette, which centers on Louisiana socialite Madame Marie Delphine LaLaurie, played by Kathy Bates. Gabourey Sidibe (Queenie) explains the the Madame was an actual person, and the country's first female serial killer. In the series, LaLaurie was buried alive for 180 years, and brought into present day New Orleans, where, due to her insolence, is forced to be Queenie's personal slave. Learn more about this compelling character before tuning into American Horror Story: Coven on FX.