Dylan McDermott shared a photo on Instagram of him and Evan Peters on the set of American Horror Story: Apocalypse. The new season of Ryan Murphy's enduring horror anthology series premieres September 12 and marks the first time AHS will crossover different previous storylines.

Both seasons 1 and 3 will merge in season 8 and the recent deluge of casting news has revealed most of the heavy-hitters returning to contend or ally themselves with Antichrist Michael Langdon. Dylan McDermott, Connie Britton, Evan Peters, and Jessica Lange will all reprise their Murder House roles as members of the Harmon and Langdon family, respectively, and Frances Conroy, Gabourey Sidibe, Lily Rabe and Emma Roberts' New Orleans witches will fly in from Coven. Sarah Paulson and Taissa Farmiga are promised to pull double duty, each portraying their seasons 1 and 3 characters - medium Billie Dean Howard and Supreme Witch Cordelia Goode alongside Farmiga's deceased Violet Harmon and Zoe Benson. Paulson will also appear as a third mysterious character named Venable, the details of whom remain very sketchy.

Related: Connie Britton and Dylan McDermott Returning to American Horror Story

Dylan McDermott shared a photo on Instagram of him and Evan Peters on what looks to be the lawn of the Murder House on set of Apocalypse today. The two look like they're on much better terms than their AHS counterparts will be considering Tate Langdon not only fathered the Antichrist, but did so with Ben Harmon's unsuspecting wife. Tate's also a former mass murderer who's madly in love with Ben's daughter Violet, so it's safe to say the relationship between the two men is strained - especially if they're stuck in the same house together for eternity. The two actors posing behind a wrought-iron fence appears to call back to the fact that anyone killed on Murder House property is doomed to be trapped there forever.

Interestingly, the spirits in the Murder House aren't the only undead characters that promise to crop up in Apocalypse. Several characters crossing over from Coven will have to be ghosts or at least resurrected. Roberts' Madison Montgomery, Conroy's Myrtle Snow, and Rabe's Misty Day all perished at the end of Coven. Given the rather loose rules that govern life and death in Ryan Murphy's AHS universe, it makes sense they would return, but how and in what capacity is still up in the air.

That, plus the status of the Harmon family, and just what Constance Langdon has molded her grandson into remain the most pressing questions Apocalypse has to answer ahead of its debut in a few weeks. Considering fans have been salivating for confirmation of a shared universe between seasons since Asylum, not to mention the nostalgia factor at work in returning to the genesis of the entire show, Apocalypse stands to be one of AHS' most exciting stories, yet.

More: American Horror Story Season 8 First Trailer Teases the Apocalypse

American Horror Story: Apocalypse premieres on September 12 on FX.

Source: Dylan McDermott