The witches under the care of Fiona (Jessica Lange) have a common enemy, but can’t seem to get along with one another, either. Last week, one witch was entombed alive, while another was drowned in a bathtub – and both of these were what could be classified as “witch-on-witch crimes.” But just because those witches are dead and/or buried, that doesn’t mean we won’t be seeing them again. On this series, quite the contrary. Take Kathy Bates as Delphine, for example. Tonight, she’s baaaaa-ack…