But I don't necessarily think he is innocent but DO believe 100% that the silencer was never used. Of course if Jeremy is guilty, he would know whether it was used or not - if he knew it was, he certainly wouldn't have wanted any DNA analysis carrying out and yet that's exactly what happened. And for ALL of the blood contained in the silencer, they were unable to identify Sheila Caffell's DNA.
If the silencer was planted, it wouldn't have needed a cast of thousands to pull it off , as previously stated, just a few of the main characters and the cooperation of a few civilians. Having the family say that they found the silencer has the advantage, that if caught out,the police can distance themselves from any wrong doing.
If I were guilty I would not fear a DNA test. You ignore that the prosecution removed all visible blood and then the defense expert removed all microcsopic blood traces. In 1989 a test was done for blood and found no blood evidence left, it all had been removed previously. So of course no blood based DNA of Sheila's would be found from a DNA test performed after that. He had nothing to fear at all the fix was in which is why the court considered the results worthless. None of the DNA tested could have come from blood it had to come from ordinary contamination it had to be non-blood based.
The DNA tests needed to be performed on the blood that the prosecution and defense experts found to be group A. But the blood from such tests is long gone it could not be tested.
In the meantime you are wrong about Sheila's DNA not being found it was. 17 markers matched hers which is enought to statisticly say it was hers. But since there was no blood left this means if had to be DNA from another source not blood just like June's could not have been from a blood source. Other DNA didn't match anyone in the family and could have belonged to anyone involed in the case.
The DNA method used is so sensitive that even a tiny particle cane be tested which means that even the tiniest contamination presents a problem. It is why labs and police today must be so careful if they intend to use such.
The bottom line is that the dice were loaded and Bamber knew no blood based DNA of Sheila remained so tha tis why he had no fear in requesting the DNA test but the same thing that gave him no fear made the findings worthless. But his team tried anyway to make an argument to the court, they had nothing to lose in trying.
As for planting it would need a wide cast of characters to pull it off including eliminating the blood that would have been inside the rifle. Those planting it has to know how to pull it off as well. Involving the family creates more danger not less because it means the fmaily could rat them out. Far from being scapegoats it makes mor epeopel who could mess up and leak the truth. Moreover, eliminating the blood in the rifle could not be accomplished by the family it still would have to have been done by the lab. The family would not be likely to know the significance of blood spatter let alone know how to spray it inside so again they would not make good scapegoats.
There is no doubt in my mind at all that if anyone planted it they would have simply taken a vial and poured it in or used a dropper not have sprayed it inside. Nor would they have take the extra step of planting paint. It makes no sense.
None of the police in question were ever caught planting evidence in any other case and those who plan evidence rarely do it one which is why when something hits the fan so many cases are scrutinized. There simply is nothing in this case that is similar to cases where evidence was actually demonstrated to have been planted.
On one hand you suggest the fmaily finding it was helpful to them but that is what most people seize upon to question it. The most tidy planting would feature police saying they took the suppressor while searching it, hat they saw blood when picking it up and then transferred it to the lab and after the lab finally tested it then it revealed the group A blood. There would be less questions in that case. The tale they told was rather embarrassing abou how supid they were and opened the up to more attacks than would have been the case. I don't see the advantage in this especially since the family could trip up if they were involved in the conspiracy. Even if the faily did not mess up and reveal the blood had bene planted by accident, if the blood were proved to be planted would the faily take the blame or rat out the police? The fewer people involved the better that is the rule of thumb.