Hajime finally figures out the identity of Burial Francs and sets a trap at the hospital treating Kimasawa to catch the elusive culprit when theytries to kill Kimasawa. He explains the killer switched her room key with Kiriyama’s so she could lock the room from the outside and he exposes Naoko Torimaru as Burial Francs. Naoko eventually admits her plan, and tells how she and Masumi had similar upbringings, and how Kimasawa helped her get rid of a criminal she killed years earlier, however when Kimasawa named Yousuke Inukai as her successor, she decided to act...