Case Closed Episode 690

No Scout Verdict Yet

Be the first Scout to rate this episode and share your thoughts.

Animation & Style

Character Writing & Lore

Pacing

World Building & Setting

👀 SPOILER-FREE SUMMARY

A heavyweight mystery episode that puts Conan's intellectual lineage front and center. The title says it all — a case connected to Yusaku Kudo's past resurfaces, blending legacy and unfinished business into a puzzle that demands full attention. The pacing is deliberately methodical, prioritizing deduction and clue-building over action, making this one for fans who love the cerebral side of Detective Conan. Ran, Sonoko, Masumi Sera, and the ever-enigmatic Subaru Okiya all play meaningful roles, and their interplay raises the stakes beyond a standard whodunit. As a Part 1, expect atmosphere-heavy setup: tension simmers beneath the surface, unanswered questions stack up, and the episode leans hard into suspense without rushing toward resolution. This is classic Conan at its most contemplative and rewarding for patient viewers.

🔥 KEY MOMENTS

⚠️ Spoiler Alert!

A Decade-Old Murder Resurfaces

Conan and the Detective Boys stumble upon the cold case of Takefumi Koriyama, a preschool principal who was fatally stabbed near a vending machine years ago. The unsolved nature of the case immediately hooks Conan's investigative instincts.

The Takaichi Connection

The team uncovers that Isao Takaichi, who died of cirrhosis of the liver, has a suspicious link to Koriyama's murder. What initially looks like an unrelated death starts forming the outline of a much larger web of connected victims.

Ryosuke Nishimura's Shadow

Digging into the past, Conan zeros in on Ryosuke Nishimura, who was only five years old at the time of the stabbing. His ties to the preschool raise uncomfortable questions about what a child may have witnessed — or what role the adults around him played.

Yusaku's Unfinished Work

The case carries the weight of Yusaku Kudo's name — this is a mystery even Conan's legendary father couldn't close. That fact alone signals to Conan that the truth is buried deeper than the surface evidence suggests.

Setting the Board

The episode closes with the team mapping out the tangled relationships between victims and suspects, preparing for a deeper dive. It's classic Part 1 architecture — all the pieces are placed, and the tension is quietly coiling.

📍 ARC CONTEXT

Following the standalone 'Messages From the Client' (Episode 689), this episode launches a two-part storyline that ties a present-day case to a decade-old unsolved investigation from Yusaku Kudo's career. It's the opening half, so all setup and escalation lead directly into 'Yusaku Kudo's Unsolved Case (Part 2)' (Episode 691). The involvement of Subaru Okiya alongside the core cast signals this two-parter carries weight beyond a routine case.

⚡ ALL REVIEWS

AnimeOshi.com refers to anime titles, character names, logos, and other trademarked or copyrighted materials to identify and describe the works being reviewed, discussed, ranked or otherwise referenced on this site. This usage is believed to be nominative fair use or non-infringing and is not intended to imply any affiliation with the respective rights holders.

All trademarks and copyrights remain the property of their owners. If you are a rights holder and have concerns about any content on this site, please contact us at legal@animeoshi.com