Case Closed Episode 403

👀 SPOILER-FREE SUMMARY

A standalone filler two-parter kicks off here, handing the spotlight to the Detective Boys for a classic treasure-hunt setup. Conan, Haibara, Ayumi, Mitsuhiko, and Genta find themselves drawn into an inheritance mystery revolving around a cryptic riddle and an atmospheric mansion begging to be explored. The tone leans into adventure and cerebral puzzle-solving rather than high-stakes crime, making this a lighter but genuinely engaging entry. Expect corridor-creeping tension, teamwork dynamics among the kids, and riddle mechanics that reward attentive viewers. The pacing is deliberately methodical—clues are planted, rooms are investigated, and the mansion itself functions almost as a character. If you enjoy the Detective Boys ensemble episodes where Conan shares the detective duties, this one delivers exactly that energy without touching the overarching narrative.