If you watch the cadaver dog video carefully, you will note that the handler first opens the far cupboard door located beside where Eddie had stood, barking. The handler must have expected to find the scent source, CC, within that cupboard. But CC wasn't in that cupboard - it was then produced from the cupboard nearest to the cameraman. Why was that do you suppose?
Well done misty

Had an awful struggle to find how to slow frame the images, but finally managed it.
As you say Eddie alerted above the first door that Martin slid open and this was not the actual cupboard that CC was in, although they did open into each other.
Watching the video run at 0.25 speed rather than normal, it was pretty obvious that the loose piece of paper on the top of the pile of folders /clothes was what interested Eddie. His nose virtually touched it as he started barking.
So where did that piece of paper come from? Where had it been, or what had been done to it, to make it smell of pig, blood or Cadervine?
Anyone know where it came from, or who it belonged to?