Detective Conan - The Monster of the Tottori Spider Mansion (Part Three: The Solution)

Seizoen: 7 - Aflevering: 6 / 176 - Eerst uitgezonden: 15 november 1999 - Episode ID: 70672

The culprit is caught thanks to Conan and Heiji who hung those he blamed for not stopping his girlfriend from hanging herself, but what did the killer miss?