While painting the knife green to hide between the flowers is a neat idea I think it should still have been found while checking the vase.

Haibara likes using foot a lot.
She did it to conan and this guy.

It's painted so well that you can't identify it as a weapon

They need to stop treating these kids like they haven't seen numerous dead bodies by now; come on.

Nah, there's probably real-world responsible adult reasoning for it.

my guess: worng :(

why is it not your fault that you killed someone? make it make sense :D

First introduction of Akai's brother