'American Horror Story' Season 3 "Coven" Spoilers: Stevie Nicks Confirmed for Episode 10 and One More Says Co-Creator Ryan Murphy [Trailer]

Resident rock-star sorceress Stevie Nicks will be filming a couple episodes on American Horror Story: Coven.

Though once only believed to be making a cameo as the Fleetwood Mac singer in Season 3 Episode 10, co-creator Ryan Murphy confirmed she'll be back again for another appearance as well.

"We have Stevie for another one, doing an idea that she came up with that I thought was too perfect to say no to," Murphy told Entertainment Weekly. "Hilariously, Stevie read some of the scripts and called up and said, 'Are you aware that one of the things you're doing I actually wrote a song about?' I'm like, 'You've got to be kidding.' Then I remembered the song. We have something cool that was her idea."

Murphy didn't reveal what song it actually was, claiming it would spoil the episode. However, the Glee co-creator did confirm a fourth season of the wildly popular Horror Story franchise.

"It's a slow build and I keep adding on. Angela is coming back hopefully. Kathy is coming back hopefully. Jessica, Sarah, Evan. Franny Conroy we want to come back. We have a great part for her. And new people too! I love an actor I did The Normal Heart with, Finn Wittrock."

American Story Season 3 Episode 9 "Head" airs Wednesday, December 11 at 10 PM ET on FX.

Check out this trailer promo for the upcoming episode: