The multiple seasons of FX's American Horror Story are expected to come together over the next few seasons.

The inclusion of Pepper (Naomi Grossman) in American Horror Story: Freak Show, having previously appeared in Asylum, opened up the possibility of characters appearing in future seasons. Then Hotel featured numerous former characters, including Coven's Queenie (Gabourey Sidibe) and Murder House's Billie Dean Howard (Sarah Paulson) and Marcy (Christine Estabrook).

Such connections between seasons will presumably continue in season 6 and beyond, according to AHS co-creator Ryan Murphy.

"You'll see it this season, and then you'll really see it after this season," Murphy told The Hollywood Reporter, of connecting seasons. "We lay a lot of pipe, and you'll see it explode in seasons seven and eight. They haven't officially been picked up yet by John Landgraf - he and I always talk at the end of the year and decide how many we want to do. But John has always said, and I have always agreed, that this is a show that could be like 'The Twilight Zone' and run for multiple, multiple seasons and have its own inner mythology. So that's how we're approaching it. I'll keep doing it for as long as we have the ideas and the momentum. I really love doing it."

Meanwhile, American Horror Story fans have been desperately waiting to find out the concept for season 6, which remains a mystery despite the premiere being less than a month away. Murphy spoke on the decision to leave the concept unannounced, saying he spoke with Landgraf and Fox TV Group's Dana Walden about doing things differently.

"The show is in its sixth season, and we've always done everything by the book. Come January or February I announce what the theme is, and then we announce the cast," he said, of past seasons. "We wanted to [create a] different experience for the fans this year. But that doesn't mean we'll do that for season seven or even season eight."

American Horror Story season 6 premieres Wednesday, Sept. 14 at 10 p.m. ET/PT on FX.