I have always wondered, Why doesn't Kogoro, the police, or the people Conan knocks out find the anesthetic needle on their body afterwards. Its a silver needle sticking in your body and conan never pulls them out afterwards. Kogoro has been shot in his forehead sometimes and never noticed? He has to know Conan is knocking him out, he even recalls the tingling feeling in different places where Conan shoots him. When the police takes away a knocked out culprit, why don't they ever find the needle when they are searching them?
I want to hear what you all think about this
-Detective Kudo