"Interesting," Murphy wrote alongside the image, maybe confirming a long-held fan theory or maybe just doing his best impression of everyone reacting to Evan Peters' new hair. Interesting indeed.
If the above looks familiar, it's because you've seen iterations on Reddit and other fan forums. Murphy said in 2014 that all the AHS seasons connect. ("They're all very separate," he told Entertainment Weekly in 2014 when discussing Freak Show, "but there's clues every season that we're now telling you how the different worlds are intertwined.") Viewers have been trying to piece the puzzle together ever since.
The "circles of hell" allude to Inferno, the first part of Dante Alighieri's 14th-century epic poem Divine Comedy, which ultimately follows Dante's journey to God. First popularized by TV site Red Herry in an impressively thorough blog post, the Inferno theory angles "each season of American Horror Story as a 21st-century interpretation of a circle of Hell." (TL;DR: Refer to Murphy's Instagram post.)