A powerfully written letter by Georg Wilhelm Dumler, a former administrator of St Martin's Church in Bamberg, may have been the final piece of evidence needed to convince the emperor once and for all that the trials needed to be stopped in his letter he stated the following.
* Several hundred respectable people had suffered as a result at torture and the leaders of the witch-commission were easily led by false accusations.
* There was never sufficient proof in the trials to legitimately find suspects guilty.
* In August 1628, his pregnant wife had been taken from their house to the witch-prison, where she was tortured and miscarried. She was executed, and new he had been accused of witchcraft. Both he and his wife were entirely innocent and were raised as pious Catholics.
* The Carolina Lev Code permitted the accused an advocate or lawyer to represent them in court, but this had been denied at the Bamberg trial.
* Cases of witchcraft should be heard in the civil courts, but in Bamberg they were being heard behind closed door by the commissioners.