[1] Jacob left Germany for Strasbourg in 1932, where he set up an independent press service,[2] and was stripped of his German citizenship the following year.
[1] Having been enticed to Basel, Switzerland, by undercover Gestapo agent Hans Wesemann, Jacob was kidnapped on 9 March 1935 and taken across the German-Swiss border to Weil am Rhein.
[5] The case was investigated by Swiss police officer Anton Ganz, who went to London to interview such people as Dora Fabian and Karl Korsch.
The subsequent death of Fabian alongside her friend Mathilde Wurm led to concern that they had been murdered rather than committed suicide which was the verdict of the coroner's court.
[6] This contributed to the climate of opinion which led to a successful campaign for Jacob's release from Nazi Germany.