American academic Hannah and runaway Moroccan teenager Tariq have little in common, yet both find themselves haunted by the ghosts of Paris.Hannah listens to the extraordinary witness of women living under the German Occupation and finds a city bursting with clues, connections and past love affairs, while in the migrant suburbs Tariq is searching for a mother he barely knew. Urgent and deeply moving, Paris Echo asks how much we really need to know in order to live a valuable life.