[2] She was married twice: first to German lawyer Kurt Caspary around 1921, then to Swissman Henri Dübendorfer, which allowed her to gain Swiss citizenship, in 1934.

[2] At the start of the Second World War, she worked as a secretary at the League of Nations International Labour Organization and also led a group of Swiss communist informants in Geneva, Switzerland.

[6] She received intelligence reports from German refugee Rudolf Roessler[7][8] (nicknamed Lucy)[5][6] in return for not revealing his identity.

[3] In November 1943, Dübendorfer became the lone Red Three member after leaders, including Radó, were arrested and imprisoned.

[11] Afterward, Dübendorfer refused to co-operate with Soviet leader Joseph Stalin and did not want to send information back to Moscow.