Between 1933 and 1938, following the example of its British and American counterparts, the Paris Psychoanalytical Society welcomed or integrated into its ranks several members of the German and Austrian societies who had been banned by the Third Reich. Among them was Rosa Walk (1893-1942), a member of the Vienna Psychoanalytical Society. Arrested by the French gendarmerie in the Drome department during the large-scale roundups of the summer of 1942, Rosa Walk was the only female active member of the International Psychoanalytical Association to have died in a Nazi extermination camp. After recounting the key moments in the policy of SPP members towards their counterparts persecuted by Hitler's regime, then the broad outlines of Rosa Walk's journey until her deportation and murder in Auschwitz-Birkenau, this article seeks to understand the reasons that may explain such a long period of historiographical and memorial invisibility.