This is quite a horrible thought but is it possible Crispy could have interfered with the victims and/or SoC eg bible, rifle, casings? I have no experience of dogs so I have no idea what the poor little thing would do. Would it (was Crispy a he or she?) be aware the victims were deceased, think they were sleeping or be oblivious?
AE said Crispy jumped on her lap at JB's cottage so I'm wondering if it might have clambered on top of the rifle/SC?
Also while I'm on the subject of Crispy it appears he/she moved about ie from kitchen (tel op heard?) to bedroom but no evidence of paw prints in blood?
And, this is a really horrible thought, but I believe June's legs had smears of blood on is it possible Crispy might have licked them?
DI Cook (think it was him) said he put Crispy in the wardrobe as he didn't want him/her interfering with SoC but by this time potentially he/she had been roaming around unfettered for some 4 hours.
There wasn't any suggestions that Crispy had some great love for Sheila that he would want to go to her. Dogs usually stay away from dead things. while a dog could potentially knock a rifle off a body if sitting on the person they would not transfer a gun to a body.
If Jeremy but the Bible on Sheila then maybe the dog could knock it off. But it would be unlikely to stay to the same exact page, in fact it would be likely to close. The chance of it staying open to the same page and landing in the pool of blood seems pretty far fetched. Moreover placing it directly on her body would be stupid how would it get there after she shot herself? Even Jeremy should have realized that she would not lay down. Have the Bible on her body then shoot herself while it was on her body. That seems ludicrous.
How he screwed up was placing it in her pool of blood by her face instead of placing it by her waist. He seemed to associate head- reading not fulling considering that when you put it down you do so by your waist not your head. That's another argument the prosecution missed making.
Police saw something was wrong with where it was located. Maybe they never told the prosecutor and the prosecutor never realized it himself or maybe the prosecutor didn't want to complicate the case and felt the moderator evidence was enough. Sometimes when you make too many arguments you confuse a jury.