Constellation by Adrien Bosc (Serpent’s Tail, £12.99) picks nimbly along the divide between fiction and non-fiction. It’s really a speculative group biography, telling the story of a Air France plane crash in the Azores in 1949, and the lives of the plane’s passengers, mostly (except for a quintet of migrating Basque shepherds) of an appropriately stellar socio-economic stratum.