At the end of the last civil-military dictatorship, a camouflage operation took place in the Information Service, an office of the former Rosario Police Headquarters that operated as a clandestine detention center in the heart of the city. This architectural intervention, not recorded in the plans, obscures the survivors' accounts and hides the traces of crimes against humanity. Drawing on images, previously unpublished archives, and survivor testimonies, the documentary explores the scars of political repression and highlights the importance of preserving memorial spaces to ensure the transmission of fundamental events in our contemporary history.