Travelling by train has always had an air of civilised glamour, as the track cuts precise swathes through all terrains. The bringing together of souls journeying together with diverse purposes also makes the railway an ideal setting for fiction. So climb aboard with our selection of the very best railway reads, including implacable opposition to the Nazis in Closely Observed Trains, obsession and murder in Strangers on a Train and, of course, Agatha Christie's Murder on the Orient Express.