One of the things we realized as we were getting to the end and trying to squeeze in story where we could was, like, of course Katherine wound up running hell. Of course she had Cade wrapped around her little finger. We made the decision when we took Katherine away that we were going to do it in a way that looked different from how anyone else had died. We weren’t going to push ourselves to answer the question of ‘where,’ because — in our minds — it was whatever version of hell The Vampire Diaries would choose to tell stories about. In Season 8, we decided to tell that story. It came back around perfectly because we got to show not just where Katherine’s been, but also reveal that she’s actually basically been the puppet master of everything that happened in Season 8 — which is nice full circle back to how she was the puppet master of everything in Season 1.