Deventer murder case

The most convincing piece of evidence was, according to the court of justice, the result of an odour test which had been performed on a knife supposedly used by Louwes to commit his crime.

In July 2003, the Dutch Supreme Court still decided to reconsider the case because the odour test performed on the knife had proven to be incorrect.

DNA profiling was then used by the Forensic Institute in order to examine the blouse the widow had been wearing at the time she was murdered.

Although the DNA proof in question had been admitted by the court because it was under chain of custody, this is the first controversial part of the case.

One of them confirmed in writing that he did not know where the blouse had been shortly after the murder, while the other one had given up his involvement in the case almost immediately after the widow's body had been discovered.

The supposed DNA proof on the widow's blouse was re-examined by the British Forensic Science Service on 31 March.

[6] In December 2011, the Dutch philosopher of science Ton Derksen [nl], who had earlier instigated the re-opening of the case of Lucia de Berk, published a book in which he strongly defends the innocence of Louwes.