Looking back through my points of surfacing in Quartet, a book filled with references to sites across Montmartre and Montparnasse, some of which I have visited and explored here - through streets, hotels, cafés - the different views of the city. Through these locations I have crossed into some of the imagery and ideas in the book: the bars and nightlife, the concealed and invisible populations of migrants and stateless people, the elegant façade of the grand buildings and sites of justice and respectability, the life of the back streets, their poverty and hidden places, the dark river flowing through, the city as labyrinth.