S1E587 · Kid vs. the Four Spirits of the Detective Boys

The Detective Boys discover Conan is feigning to be in an unconscious state to deduce Kid's motive for stunning him. The Detective Boys inform Conan what occurred during the black out allowing him to deduce who Kid is disguised as. Conan has Haibara reveal to the adults that Kid manipulated the Detective Boys, unknowingly, into opening the center pillar by having them lean on the pedestals. Haibara explains that the Four Symbols each represent a season; The inscribed writing in the pillar describes going with the flow, and when the pedestals are pushed in the order of Spring, Summer, Autumn, and Winter, the center pillar opens. She reveals that Nakamori had asked them to protect the pedestals in exactly the same order and reveals Nakamori to be Kid. Haibara discerns the cards were attached to the back of the Detective Boy's custom made anoraks disproving Kid had an accomplice.