4 iconic moments · verified episode numbers · no spoiler ratings
| Episode | Moment | Type |
|---|---|---|
| Ep 1 | Sebastian's Contract — The Young Earl's Bargain | Arc Start |
| Ep 4 | The Jack the Ripper Case — The Countess's Secret | Reveal |
| Ep 24 | Ciel's Past — The Cult Ritual | Reveal |
| Ep 43 | Ciel's Twin — The Real Ciel | Reveal |
Young Ciel Phantomhive, traumatised after witnessing his parents' murder, makes a contract with the demon Sebastian Michaelis: Sebastian will help Ciel exact revenge on those responsible, and in return will consume Ciel's soul when the goal is achieved. Sebastian introduces himself as one hell of a butler.
Ciel investigates the Jack the Ripper murders in Victorian London and discovers the killer's identity is connected to the highest levels of society. The case establishes the series' formula: high society concealing monstrous crimes.
The full truth of what happened to Ciel the night of his parents' death is revealed: he was used as a sacrificial child in a cult ritual. Sebastian appeared at the darkest moment and Ciel chose damnation over mercy. The scene is the emotional foundation of the entire series.
The shocking revelation that Ciel Phantomhive is not Ciel Phantomhive — the real Ciel was his twin brother, who died in the ritual. The boy who made the contract with Sebastian took his dead brother's name and identity. Everything the audience knew about the protagonist was built on this secret.
Episode numbers are verified against the aired broadcast order. Black Butler is the property of its respective creators and studios.