Just when you thought “American Horror Story” couldn’t get any more frightening creator Ryan Murphy announces twisted plans for a future season that may be eerily familiar to fans of the franchise.

During an appearance at Entertainment Weekly’s PopFest on Sunday, the showrunner officially confirmed that an upcoming season of the FX original series will be a mash up of “Murder House” and “Coven.” Not only will “American Horror Story” revisit plot points and storylines from Seasons 1 and 3, respectively, but Murphy said he hopes to bring back a number of stars from both shows. While he is committed to creating the crossover, Murphy said fans will have to wait until after Season 7 to see it.

“We do know what we’re going to do,” he said while sitting on a “Scream Queens” and “American Horror Story” panel. “It’s not going to be next season, but we are going to do a season that’s a crossover between ‘Murder House’ and ‘Coven’ together, which is very bizarre.”

For now, fans will just have to enjoy the callbacks to earlier editions of “American Horror Story” in Season 6. During a sit down with EW on Oct. 18, Murphy admitted that he had paid homage to “Coven” several times throughout Season 6. Perhaps the most important tie between the two seasons went largely unnoticed by fans. During the interview, Murphy revealed that Lady Gaga’s “American Horror Story: My Roanoke Nightmare” character is the first supreme — in other words she is Fiona (Jessica Lange) from “Coven.” It was then that he first announced plans to delve deeper into the witchy storyline in a future installment of “American Horror Story.”

“At some point, we’re going to do a return of the ‘Coven’ season,” Murphy said. “I don’t know what season that will be.”

“American Horror Story” Season 6 also featured one obvious nod to “Freak Show.” During episode 5, fans were introduced to Edward Philippe Mott (Evan Peters), the original owner of the farm house Matt (André Holland) and Shelby (Lily Rabe) were living in. He had the house built and moved in with a horde of servants, his lover and his vast collection of art. Once settled, strange things began happening — people darting through hallways, knives stabbed into the headboard and, lastly, his art collection slashed.

Edward blames his servants for destroying the pieces, banishing them to a cellar below the house. He’s killed before he can free them again and they die of starvation. The deed of the house was passed down through the Mott family until, according to the show, his last living relative — none other than Dandy Mott (Finn Wittrock) — died in Florida in 1952.

Will there be more callbacks to previous seasons of “American Horror Story” in Season 6? Tune in to FX Wednesday at 10 p.m. EDT to find out.

“American Horror Story” “American Horror Story” creator Ryan Murphy has big plans to revisit “Murder House” and “Coven” for a mash up installment of the FX original series after Season 6 and 7. Photo: FX