The article discusses the activities of the so-called “Diamant Network”, a group ostensibly composed of Jewish Gestapo agents in Kraków. Much of the article is devoted to critical analysis of documents from the independence resistance in Kraków. The Diamant Network took on a mythical aspect and generated numerous legends, including the image of an armed group of Jewish Gestapo agents that aimed to stamp out the local resistance movement. In the eyes of the soldiers in the Kraków resistance, whose tales were steadily embellished with more and more details, it was an organized and dangerous network of Gestapo agents, an unparalleled entity responsible for most of the occupier’s actions against the resistance. Consequently, many crimes and acts of denunciation to the Gestapo were attributed to Jewish spies and collaborators in what has now become part of the Polish historical discourse. The article tackles the myth surrounding the network’s activities by deconstructing and reconstructing existing studies in order to recreate the activities of the members of this group as they really occurred.