Meitantei Conan S14E28 - 仏滅に出る悪霊（解決編）

They decide to investigate the four workers of the mansion along with the accident that took place thirteen years ago. Conan realizes that a twin who was supposed to be long dead was involved, and that was what scared the manager. It was revealed that on the wristwatch of the dying victim, was the location of where the boat accident happened.