After investigating the room, Masumi declares the culprit to be Toshiko Hirukawa as she lied about the elevator usage to Conan. She reveals Hirukawa got Usumi drunk, placed him on the wheelchair, and used a system of strings connected to the elevator to throw him out the window. However, re-acting the scene fails, until Conan voices his deductions over the phone as Shinichi revealing the paint cans were placed out of the window to tilt the wheelchair.