Agatha Harkness exposed: the shocking historical identity of Jolene revealed in Agatha All Along

During the latest episode of the miniseries, "Familiar by Thy Side," a flashback shows Joe Locke's character "Teen" (a.k.a. Billy Kaplan, a.k.a Wiccan) researching Agatha Harkness's vast history. It spans centuries going as far back as the 1690s, when Harkness avoided being killed during the Salem Witch Trials.

There's also a blink-and-you'll-miss-it moment where we get a glimpse at an internet post archiving a newspaper article reading "Does This 1972 Surveillance Photo of Dolly Parton Show The Real Jolene?" Underneath are two copies of the photo, showing Parton slapping Agatha "Jolene" Harkness square across the face.

In an interview for The Wrap, Agatha All Along showrunner Jac Schaeffer was asked to officially confirm whether or not Harkness really was the infamous "Jolene." She responded with a laugh, saying, "In the MCU, hell yeah."

A follow-up question was asked about how the writers decided when and where Harkness would show up throughout time, and Shaeffer explained the process. She said that she likes to assign the writers homework, one assignment being, "Give me five low-level, nefarious things that Agatha has done in her deep past."

Neither the Hindenburg or the Titanic would be described as "low-level," and frankly, trying to steal Dolly Parton's man doesn't either! The cheek, the nerve, the gall, the audacity, and the gumption! Shaeffer credited writer Laura Donney for the idea and described when she pitched it to the team.

"That was a Laura Donney idea. And it was one of, I remember being one of the most fun days in the room, was everybody coming in with their sort of low-level Agatha nasties. And that was Laura Donney. She was like, 'She’s Jolene.' And we were just like, everybody fell out. It was so funny."