Conan Mobile Toilet
The case related to the mobile toilet in Detective Conan appears in TV episodes 744 - 745 (overseas split version episodes 797 - 798) titled 'The Suspect is Kyogoku Makoto'.
Core Plot of the Case
In the case, a male teacher drowns mysteriously in a mobile toilet. There is no obvious water source at the scene, yet the cause of death is clearly drowning. This contradictory phenomenon becomes the key mystery of the case. The perpetrator creates an seemingly impossible locked-room method through a carefully designed experimental principle, adding complexity and suspense to the case.
The Perpetrator's Modus Operandi
The perpetrator first blocks the drain outside the toilet to ensure that rainwater can accumulate smoothly. Then, they use a stun gun to knock out the victim and place them inside the mobile toilet. Next, they place a large amount of burning kerosene on the storage shelf on the upper side of the toilet. After closing the toilet door, they carefully seal all the gaps with tape, leaving only a small gap at the bottom. When the kerosene lamp goes out due to oxygen depletion, due to the principle of thermal expansion and contraction, the air inside the toilet gradually cools and contracts, creating negative pressure. At the same time, the external accumulated water flows back into the toilet through the gap at the bottom due to the pressure difference. As the water level continues to rise, the victim eventually drowns.
Uniqueness and Impact of the Case
Among the numerous cases in the Conan series, the mobile toilet case stands out due to its bizarre modus operandi and controversial design. Usually, toilets, as everyday scenes, often serve as key locations in the Conan series where Conan switches identities or creates opportunities for solitary reasoning. However, in this mobile toilet case, an ordinary-looking facility is transformed into a crime scene. Through the application of scientific principles, it showcases the high intelligence and meticulous planning of the perpetrator and also brings a brand-new reasoning experience to the audience, making it one of the memorable classic cases in the Conan series.
