The LINCS project is the collective effort of 12 partners and the legacy of 14 years of participation in the ERN as a consortium. The ambition is to organize events in 14 different French cities (specifically focusing on medium-sized cities, where research is happening, but science engagement activities are less frequent), sharing the same objectives, theme, activities, approach to popularization, and at the same time involving local researchers. Convinced that the quality of the exchange with researchers is the key factor in enriching and refining the citizens' vision of research, we create intimate, warm, direct encounters between the public and researchers, with a specific focus on the 15-30 age range. To achieve this, the 1,200 researchers involved in the project will be coached and trained by mediators, artists or scenographers, using different methods. A long-lasting effect on researchers will be one outcome, as ERN is an occasion for them to start a long journey in science engagement. The planned activities enable privileged encounters and/or shared, fun experiences in direct contact with professional researchers. The “EU corner” will be enlivened by the participation of EU researchers, games and live radio broadcasts. The French Ministry of Culture will financially support the event for the 3rd year, fostering the participation of researchers in social sciences and humanities; the Ministry of Research will also continue its support. One partner is in charge of strategies for reducing the environmental impact of the events. The LINCS project is based on an original tagline, a theme to intrigue visitors and stimulate the creativity of researchers and mediators. A theme which testifies to our ambition to set up almost intimate meetings between researchers and visitors. Meetings which promise to unveil the untold stories of an exciting profession. A slogan that evokes both secrets and curiosity: "Little Nocturnal Secrets" (“petits secrets nocturnes”). But shh…!