And there's a new transfer from the original negative, a new sound mix that's much crisper.

原始底片有了新的转变， 新的混音变得更加清脆。

Mark thinks that, after passing the original negative around to show witnesses there was no trickery with a bit of sleight of hand Mumler could have slipped the ghost negative underneath the portrait negative.

马克认为，在把原始底片传给目击证人后，只要稍微耍点花招，穆勒就可以把鬼影底片塞到肖像底片下面。