: The episode has comedic moments from the manor staff. It shifts to a darker tone in the final minutes. Quick Trivia Black Butler: Book of Circus Episode 1 Review - DeviantArt

: In classic series fashion, Sebastian foils the plot by dealing with Brandel's hidden snipers and guards before finally killing Brandel himself.

: The writing mirrors the first episode of Season 1. This is to welcome back fans.

: The episode opens with a "typical" day at the Phantomhive Manor, re-introducing fans to Sebastian Michaelis (voiced by J. Michael Tatum) as the perfect demon butler and Ciel Phantomhive (voiced by Brina Palencia) as the Earl and Queen’s Watchdog.

: The opening sequence uses the song "Enamel" by SID . The credits and animation are at the end of the episode to build anticipation for the circus arc.