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Sepia-toned image of three pairs of women’s leather Mary Jane shoes placed in front of a pitted wall marked with bullet holes.

Espionage and Execution in 1940: Anna Lilian von Vaupel-Klein

Several years ago, I came across Harm Knol Bruins in the Guy Liddell diaries. His story intrigued me and I dug deeper. How had a Dutchman, caught with a wireless transmitter, managed to escape the hangman’s noose? More to the point, why had his wife—complicit in his crimes—been shot by firing squad, while he survived? […]

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Black-and-white image of a man’s hands placing banknotes into a briefcase beside old German share certificates and an open accounting ledger.

Emil Josef Roos, Revisited: New Swiss, German, and Dutch Files (1901–1941)

N.B. I had done an earlier post on Josef Emil Roos in 2020, available here.This current one expands on his life story. Across four decades, Josef Emil Roos turned paper into power—until the paper stopped moving. In 2020 I traced the path of Emil Josef Roos as a shadowy swindler orbiting the likes of Hans

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Outdoor café tables and chairs set along a narrow street in Nice, with warm-toned buildings, flowers on tables, and pedestrians in the background.

Sommerfeld Addendum: A Right-Wing Agitator and Suspicions of French Intelligence

This is the Addendum of a five-part series on the Sommerfeld family,tracing the right-wing affiliations of Harald Tobler and hints of Yvonne’s involvement with the French military.Part 1 is here. Part 2 is here. Part 3 is here. Part 4 is here. Part 5 is here. I was sure that I had finished the Sommerfeld

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Victorian-era policemen uncover wicker baskets and wooden crates filled with silk in a dimly lit cellar, lanterns casting dramatic light.

From Wanted Man to Bookseller: The Reinventions of Georg Sommerfeld

This is Part 3 of a five-part series on the Sommerfeld family, focusing on Georg Sommerfeld’s path from bookseller to scandal and decline in Switzerland.Part 1 is here. Part 2 is here. Part 3 is here. Part 5 is hereN.B. An Addendum can be found here, touching on Yvonne’s French military connections. Setting the Stage:

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Barbed wire fence and brick barracks inside Auschwitz concentration camp on a foggy day, symbolizing Holocaust imprisonment and loss.

Yvonne Sommerfeld’s Family: Survival and Loss Under the Third Reich

This is Part 2 of a five-part series on the Sommerfeld family, tracing the fates of the wider family—so many of whom were caught up in the Holocaust.Part 1 is here. Part 2 is here. Part 3 is here. Part 5 is hereN.B. An Addendum can be found here, touching on Yvonne’s French military connections.

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Molten gold being poured from a crucible into a mould, sparks flying in the dark.

Independent Confirmation: Swiss Newspapers on the Jakobs–Goldstein Fraud

This piece is a follow-up to my 4-part series on Werner Adolf Goldstein.Part 1 is here, Part 2 is here, Part 3 is here & Part 4 is here. In earlier posts (see above), I explored the gold-related frauds of Josef Jakobs and Werner Goldstein based on Josef’s MI5 interrogations as well as brief notices

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