Ryan Murphy revealed the set up for the next installment of American Horror Story during a Friday night event for Emmy voters. (Full disclosure: This reporter moderated the panel with cast and producers.) Coven will be a massive witch-off: Salem vs. voodoo. "The witches of Salem, the smart ones, got out very early and they were none of the ones who were burned," Murphy explained. "They all gravitated toward New Orleans, where they now live, and every generation has a great witch who has the most powers of them all, and that's called the Supreme. Ms. Jessica Lange is the Supreme."