Just because theres no evidence to see doesnt mean it doesnt exist. You yourself has inferred that it doesnt ..which is premature. I think it's highly unlikely...based on the evidence...that HCW would claim he has the evidence if he doesnt.
Germany has strict privacy laws and I don't see taht HCW would break these laws recklessly
I watched a TV drama documentary programme on serial killer Dennis Nilson who was convicted of his crimes by a majority verdict.
This despite the fact that ...
- he had initially cooperated with the police
- he had confessed in detail to the crimes
- he was able to confirm the names of missing people with the DNA profile of some remains
- he had shown the police where he had burned some of the bodies in the garden of a previous residence from which forensic evidence proved his accuracy
- boiled human heads were recovered from Nilson's flat
- severed human legs were found
the jury was unable to reach a unanimous verdict on his crimes.
It really isn't as easy as is made out by some to gather sufficient evidence which will stand in court to ensure the conviction of a perpetrator.
Nilson's jury could not agree.
Now think of the uphill task facing German prosecutors in a thirteen+ year old cold case as they search for evidence connecting any individual even if the perpetrator to those events.
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More on the drama from some of the police team who worked on the case ...
https://www.dailymail.co.uk/femail/article-8735607/Des-Police-reveal-David-Tennant-got-right-wrong-investigation.html