Synopsis

She fell from her apartment. Conan determined it wasn’t suicide; it was murder. He deduced that Saki had been blackmailing one of them – Tatsuko, Tachibana, and Michiyo – possessing knowledge gleaned from some witnessed event. To silence her, they had killed her. Conan and his friends relayed this to Detective Takagi, naming the three suspects. With Tatsuko possessing an alibi, Takagi questioned the remaining two. The police presumed Michiyo committed the act after her secret was revealed