Benjamin's (Mr. Jingles) house appears to be the exact same set used for Kit Walkers house in season 2.
Evan Peters, Sarah Paulson, and now Lily Rabe have all appeared in eight out of nine seasons with Peters and Paulson missing from this season and Rabe missing from season 7's 'Cult.'
The Song "Buttons and Bows" by Dinah Shore which plays in the opening scene, has previously been used in episode 2 'Tricks & Treats' of season 2s Asylum. It plays when a drunk Sister Jude (Jessica Lange) hits a girl with her car.
This episode gets its title from the movie Lady in White (1988).
Neil Patrick Harris previously costarred in Season 4: Freakshow. In this episode, he has a "cameo" as his former starting role "Doogie Howser, M.D."