Certainly a photo of Sheila on the bed with only one wound would be sufficient to throw a spanner in the prosecution works but...
Oh absolutely! If that picture existed then I'd be the first calling for it to be revealed. But other than that, I can't think of any other picture that would make a difference in this case.
I remember in one of the submissions there was a picture submitted regarding the scratch marks.....even though the actual area that was scratched wasn't fully visible.....Seriously.
Not just ANY picture can be used - it has to DIRECTLY - go against something already decided as fact in the case.