Munsinger had been accepted into a Canadian Immigration program looking for young women displaced by war to work as
domestics and
au pairs in Canada. She arrived in
Quebec City aboard the
Acosta Sun in search of a better life. She was assigned to a family in
Montreal. She eventually left that job and went on to find work as a hostess in Montreal's nightclub scene. Munsinger also worked part-time as a waitress at the Chic 'n' Coop Restaurant which was owned by the gangster
William Obront of the
Cotroni family. As she was an attractive woman, she also
moonlighted as a model for several Montreal
furriers. Her looks and good humour made her popular amongst high society. She was introduced to many notable businessmen and politicians. Most noted amongst these was the
Associate Minister of National Defence,
Pierre Sévigny, who met her in the summer of 1958. She applied for Canadian citizenship in 1960. A routine security check by the
Royal Canadian Mounted Police (RCMP) discovered elements in her background that raised questions. The file was supplied to the RCMP by a foreign intelligence service, the
CIA. She was put under surveillance. Sévigny was observed visiting her apartment in November 1960. The RCMP informed
Justice Minister E. Davie Fulton of her activities. Fulton brought the file to the attention of
Prime Minister Diefenbaker. Diefenbaker ordered Sévigny to break off the relationship with Munsinger and continue on with his duties. Munsinger left Canada to return to
East Germany in 1961. Rumours circulated that she died of
leukemia upon her return. ==Possible security breach==