Case Closed

Commenting on the blood splatter goof you see blood on the window pane one because the body slid down the wall it did not splatter that way

Response to the above Goof: In anime it is a common aspect of the animation that when the characters head is bent over the mouth doesn't move because at that angle no one can see the mouth...this is also common in Manga

When Conan is explaining everything in Richards voice, everyone can see a clear picture of Richard on the tv screen, and they can clearly see his mouth is not moving when he talks. I would think this would make them a bit suspicious.

when Conan's thinkng"The window's splattered by blood but there's none on the surrounding window frame." if u look carefully u can see some blood on the sides of the window frame

when conan is hanging out of the window tryin to show inspector mcguire how the murder was commited *using richards voice of course*..inspector mcguire is lookin right up at conan talking into his bow tie..why doesnt he find this weird..:s..