Sheila Caffel’s blood spillage bothers me - my first instinct is that she was likely turned or rolled at some point. My reasoning being that there is something off about the contradictory running/gravity of blood flow/pooling, the angle of her head, the hint of blood staining hidden just under the bible that looks to mirror her nightgown staining, plus her left arm’s rigor mortis positioning looks like it could have been the arm used to turn her.
After having looked at all the new evidence, I still think JB is guilty and would theorise that he over powered her with his weight on her back, at which time her right arm would have been bent under her head or shoulder, whilst he angled the first shot into her neck - thereafter he would have turned her back around, and perhaps the movement of her body and head turning created a temporary surge of blood, gushing down into her armpit area. (I think if she was not rolled I would have expected the blood flow to have ended up under her head and not on the side of her nightgown). Also, the trail of blood at the very top of the night gown does not look consistent with the amount of blood in her armpit area - it is as if her head may have temporarily been at an angle, where it poured down but mostly missing the lapel of her gown. (Also, if the gun, during this manoeuvre, lay on the carpet next to her, it may explain why the silencer got blood inside it).
Also, looking at Neville’s clothes discarded on the chair, I imagine that both the socks and a lot of the blood spatter seen on the carpet around her are more likely his. (He appears to have woken when June leapt out of bed and was likely shot at, as he dashed out of the room).
We also know of Sheila’s character that she may have lain there frozen in fear, hardly breathing, playing dead. (Shallow breathing and now lying on her back would have restricted some of the blood flow which would likely have pooled in her throat, mouth etc which would have accounted for it still seeping down her hours later). Alternatively, I notice that the “first” shot is supposed to have hit her vertebrae and shattering into 14 pieces. I would imagine, looking at her x-Ray, that there was a good chance of some kind of paralysis caused from the injury to what looks like her atlas and axis vertebrae.
I think JB only realised that the shot had not been fatal when returning later with the gun, now minus silencer, unloaded and possibly wiped down in areas, ready to frame Sheila. At which point, I think he went downstairs reloaded - shot Sheila one more time - but this time, without her wriggling, he was able to administer a skin contact shot and a better angle . (This would also explain the newer evidence of the second shot being administered without the silencer attached).
Thereafter, possibly a little paranoid about the others, he went from victim to victim upstairs using his remaining bullets to ensure that they were definitely dead....which may account for the over use of bullets and why the gun was empty when he finally left it on Sheila’s body.
The only body I think he possibly did not shoot again was Neville Bamber - as by the time he got downstairs he may have realised he had already placed the empty gun or was out of bullets, so instead of reloading he may have heated up say a kitchen implement to check if Neville flinched - the idea possibly also gave him a slight thrill ie. branding him like one of the cattle on the farm and perhaps doing it three times was significant to him - maybe a burn for each of them that he had killed. (I imagine the twins did not feature in JB’s loathing of the family).
