The episode introduces Jack Renfield , an elderly veteran who served as the Moriartys' mentor and the original "Jack the Ripper". It is revealed that the safe deposit box contains his knives.
The Moriarty team is sent to retrieve the contents of a safe deposit box, only to be caught in a spontaneous bank robbery. This serves as Bonde's "trial by fire," where he must neutralize the robbers while protecting hostages without attracting the attention of Sherlock Holmes. Yuukoku no Moriarty 2nd Season Episode 4
According to Lost in Anime , this episode leans into the series' "silliness"—such as teaming up Moriarty, James Bond, and Jack the Ripper—signaling a shift into a more high-stakes, "crime thriller" status quo. The episode introduces Jack Renfield , an elderly