After tonight's "Head" episode of American Horror Story: Coven, FX released a sneak preview of episode 10, which is called "The Magical Delights of Stevie Nicks." In "The Magical Delights of Stevie Nicks" episode, Fiona attempts to out the new Supreme with a visit from Stevie Nicks. Cordelia learns the truth about Hank and the Witch Hunters. Madison tries to eliminate her competition for the Supremacy. American Horror Story: Coven tells the secret history of witches and witchcraft in America. Over three hundred years have passed since the turbulent days of Salem and those who managed to escape are now facing extinction. Mysterious attacks have been escalating against their kind and young girls are being sent away to a special school in New Orleans to learn how to protect themselves. Wrapped up in the turmoil is new arrival, Zoe, who is harboring a terrifying secret of her own. Alarmed by the recent aggression, Fiona, the long-absent Supreme, sweeps back into town, determined to protect the Coven and hell-bent on decimating anyone who gets in her way. The "The Magical Delights of Stevie Nicks" episode of American Horror Story: Coven is written by James Wong and directed by Alfonso Gomez-Rejon. It will air on Wednesday, January 8, 2014 at 10 PM EST on FX.