The episode 10 of "American Horror Story-Coven" is called "The Magical Delights of Stevie Nicks." It was reported in November that Stevie Nicks has agreed to make a guest appearance as herself in an episode of "American Horror Story-Coven." Fiona is trying to find out who is the real supreme. She is using Misty's idol, Stevie Nicks, to make Misty show her full powers.
In an interview with Entertainment Weekly, Ryan Murphy, co-creator of "American Horror Story," had said that the appearance of Stevie Nicks is "Fiona's ruse in that Fiona is trying to get the true Supreme to reveal herself because she needs to stay alive. So she tells Misty Day that the Supreme gets so many great things in life, like tickets to the Oscars and Met Ball tickets."
Murphy had said that Fiona brings Stevie Nicks as a present. It is Fiona's way of telling Misty that if she "exhibits more power she'll get that and more."
In the upcoming new episode, the other girls will come to the academy and "see Stevie and Misty singing and it starts them trying to move much quicker to prove that they are the Supreme," Murphy had added.
In the mid-season finale, "Head," Hank went on a killing spree at Marie's parlour. Before he could kill Marie, Queenie put a loaded gun in her mouth and pulled the trigger, which killed Hank. Marie finally knocked at academy's doors to form an alliance with Fiona against the witch hunters.
Cordelia will find the true identity of Hank and also more about the witch hunters. Hank was part of his father's run organisation, which specialises in witches hunting. Hank is dead but the danger has not dissipated. In the preview video of episode 11, Fiona can be seen saying, "witch hunters never act alone, we've to find the hive."
In addition to witch hunting story-arc, there is the track of finding the Supreme. In the upcoming episode, Madison is likely to do her best to eliminate her competition for the throne of Supreme.
The Official Synopsis of "American Horror Story-Coven" Episode 10 "The Magical Delights of Stevie Nicks": "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."
The episode 10 of "American Horror Story-Coven" is scheduled to air on January 08, 2014. James Wong has written the episode, while Alfonso Gomez-Rejon has directed it.