Unlike any other city in the world, Paris has underneath it a whole other urban space comprised of abandoned rock quarries, waterways, a sophisticated sewer system, a dense subway system, shopping centers and catacombs.  Throughout history stories have been told of political dissidents, thieves, partying beatniks, spelunkers, artists and phantoms, all wandering in a subterranean city of dark under the City of Light.  Now you can descend with the author as she goes down to see for herself, meeting the people who dwell in this underworld.