The letter the Axeman (Danny Huston) is shown typing at the beginning of the episode is an actual letter that was written by the real Axeman of New Orleans in 1919.
The actress who plays Millie, the young witch reading the letter in the newspaper from the Axeman (Danny Huston), is Grace Gummer, the daughter of Meryl Streep.
One of the messages received by the coven through the spirit board is "ATTIC", which is the same message the sister witches receive in the first episode of Charmed (1998)
Gabourey Sidibe (Queenie) calls Denis O'Hare (Spalding) Riff Raff, a character from The Rocky Horror Picture Show (1975), whom he resembles.
Angela Bassett (Marie Laveau), Danny Huston (The Axeman), and Gabourey Sidibe (Queenie) are credited as Special Guest Stars.
Frances Conroy (Myrtle Snow) and Kathy Bates (Madame Delphine LaLaurie) are credited but don't appear.