Agasa takes the Detective Boys to a neighbor who is giving away his belongings before moving to England. While there Teruya Kanou's, the neighbor, Papillon is missing when the longcase clock strikes twelve and chimes twelve times. When Doyle's, the Papillon, collar is found inside an incinerator and the backdoor opens, Conan realizes that a culprit attempted to falsify the scene to give the impression Doyle ran away when in fact the culprit is hiding Doyle in the House to steal him afterward. Shino Hasuki's shoes are found near the crime scene and she is suspected of being the culprit.