Magical Express Murder Case: File 2 - S2-E11
Stupidity: Kindaichi's logic as usual proves to be right, however, the theater is surrounded by a pond, not the ocean. The investigation proceeds assuming that the killer who performed a meticulously premeditated murder with great knowledge of technology and conjuring, could never go past a bit of water. Likewise, they say "nobody left their seats since the lights go off", as a certainty, but watching the scene and how it unfolds, it's simply an assumption the plot needs.