Lisières means fringes or edges, and in Les Lisières relates to a large number of things. Paul Steiner grew up in V., a town in Essonne on the fringes of Paris, although with his wife Sarah he moved to Brittany, to a town in Finistère, on the fringe of France.
My other posts on Olivier Adam:
Olivier Adam: Je vais bien, ne t'en fais pas
Olivier Adam: Des vents contraires
Olivier Adam: Le Cœur régulier
Olivier Adam: Falaises