By Tim Stack
May 09, 2014 at 12:00 PM EDT
Gregg DeGuire/WireImage

FX’s American Horror Story: Freak Show, about a 1950s Florida freak show run by a German (Jessica Lange, naturally), won’t premiere until later this year — but co-creator Ryan Murphy is revealing some more details on what he and the writers have in store for the series’ fourth iteration.

“It was always a concept that Jessica and I talked about really early on,” says Murphy of Freak Show. “It was always her favorite one, which I thought was funny. I’ve had many different versions that I’ve run by her. I just love it. It feels really right. I thought it was going to be light but it’s turning out to be quite terrifyingly dark, which it feels much more like the Asylum season. But look — if you have a character named the Clown Killer, it’s going to be dark.”

So does that mean there’s a scary clown? “Yes,” confirms Murphy. “The most terrifying clown ever!” And what about one of the most famous freak show tropes, the bearded lady?  “Yes. Our version of it.”

Freak Show is set to premiere this fall.