The Mori family, Conan, and the diving club members rush to the hospital where Kiwako is in intensive care. Conan and Eri is sure the events was an attempted murder case and Conan gets an idea who did it after a conversation Eri and Ran has about Kogoro. Conan knocks Kogoro out to use him to tell the deduction he has in front of Harumi. Conan believes Kiwako was only pretending to drown to test her fiance's love for her and Harumi forced a snake to bite Kiwako to take advantage of the situation which explains the wings Ran saw. Harumi admit her mistake and is glad the antidote reached the hospital on time to save Kiwako.