: Episode 5, "Z Is for Zombies," features a notable but often unidentified classical piano piece that has been a frequent subject of fan inquiries.
: A complex puzzle that fans discovered forms a map of Manhattan , identifying the 60 demonic houses and their lines of succession.
: Season 2 shifted from the numerical titles of Season 1 to an alphabetical "Pop-Up Book of Terrifying Things" format (e.g., "N is for Night Terrors," "A is for Angel").