As far as i remember up to 730+ep Megure never suspected Conan as much as "Kid who knows a lot of useless things..." or "Smart one", inspector always adds "...and what he teaches this kid..." So i think in future maybe he'll start to suspect conan but i dont think about it alot. But i have 1 question to all of you who remembers in what episodes(by number or case name) Megure refers to Conan as shinigami(not Kogoro) Smth like "...I'm starting to think that it is u Conan not Mouri r shinigami here...." Thats the frase i remembered and after i've seen whole anime up to 5+ times still cant remember exactly what eps it was. And i dont read manga to anime that is still on air or will be on air after short time. Since whatching is way more interesting for me than reading...