This episode is notable for providing deep glimpses into the tragic past of the Phantomhive gardener, Finnian (Finny), revealing his history as a lab experiment before Ciel rescued him.
In the original 2008 series, Episode 4 kicks off the iconic , centering on the gruesome "Jack the Ripper" murders.
Sebastian discovers a secret passageway in the village cellar, hinting at the true nature of the "Werewolf Curse".
In this 2025 adaptation, the story takes a darker, more psychological turn.
Ciel is drugged and auctioned off, only to be rescued by Sebastian. While the Viscount is arrested, a new murder the following morning proves the real killer is still at large.
Queen Victoria tasks Ciel with solving the mystery of Jack the Ripper. To investigate the underground scene, Ciel and Sebastian travel to London and are joined by Madame Red, Lau, and the bumbling Grell Sutcliff.
Prince Soma makes a grand, embarrassing entry to the college, eventually helping Ciel gather intel on the school's mysterious inner workings. Emerald Witch Arc, Episode 4: "His Butler, Serving"
Aired in 2024, this episode focuses on Ciel’s infiltration of Weston College.