The capital of France - Paris and the capital of the UN European Office and many other international organizations - Geneva has always attracted close attention from intelligence agencies of various countries. The presence of a large number of foreigners and important secrets in the safes of diplomatic and other missions in these cities, the traditional friendly attitude towards visitors and the rather liberal regime of residence and communication sometimes made it easier for the "fighters of the invisible front" to carry out the tasks assigned to them. This is discussed in the notes offered to the reader by one of the veterans of foreign intelligence, a high-class professional, a retired colonel.