This is a two-parter. In part 1, they kept making references to "Gotham" and in this one, Cesar Romero shows up. Romero starred as the Joker in the old series, Batman (1966).
Hepzibah, the haughty High Priestess of witches Is played by actress Jane Connell, who appeared a number of times on "Bewitched", playing similar roles including Queen Victoria, Martha Washington, and Mother Goose.