Book excerpt: The bestselling young adult dystopian thriller series set in a near future London: The Tube Riders: Exile Having narrowly escaped the Governor's savage Huntsmen, Marta Banks and the other surviving Tube Riders are on the run in northern France. Trapped inside a government-assigned quarantine zone, they search for a way out of a bleak countryside littered with abandoned worker robots and haunted by sinister monks, while at the same time a far deadlier threat than any they have faced before is searching for a way in ... From the towering spires of Mont St Michel through the dark horrors of the Paris Catacombs to the treacherous peaks of the French Alps, The Tube Riders: Exile is an epic continuation of Chris Ward's Tube Riders series.