Detective Conan Episode 487 ((hot)) — Verified Source

Conan Edogawa, naturally, identifies the trick behind the "locked" room. The culprit used a looped around Moroguchi’s ring to create a "zip-line" from the small window to the victim's hand. This allowed the killer to slide the key directly into the deceased man's palm from outside the room.

The next morning, Moroguchi is found dead from in a sealed room. The key to the room is found clutched in his own palm, and the only other opening is a window too small for an adult to pass through. Suspects & Motives Kakuji Dejima: Moroguchi’s interviewer. Wataru Tarumi: An editor. Harue Anabuki: Moroguchi’s housekeeper. The Resolution detective conan episode 487

It is later revealed that the ring was actually a gift from , who told Sato it was a "charm" to keep "bugs" (unwanted suitors) away. Sato, being somewhat dense in romantic matters, took the advice literally without realizing the significance of which finger she chose. The Case: The Locked-Room Mystery Conan Edogawa, naturally, identifies the trick behind the