His novel was praised for giving a voice to the victims of Algeria’s brutal civil war. But one woman has accused Kamel Daoud of having stolen her story – and the ensuing legal battle has become about much more than literary ethics

Every November, leading figures of French literature gather in the upstairs room of an old-fashioned Paris restaurant and decide on the best novel of the year. The ceremony is staid, traditional, down to the restaurant’s menu, full of classic dishes such as vol-au-vents and foie gras on toast. In pictures of the judging ceremony, the judges wear dark suits; each has four glasses of wine at hand.

The winner of the Goncourt, as the prize is called, is likely to enter the pantheon of world literature, joining a lineage of writers that includes Marcel Proust and Simone de Beauvoir. The prize is also a financial boon for authors. As the biggest award in French literature, the Goncourt means a prime spot in storefronts, foreign rights, prestige. By one estimate, winning the Goncourt means nearly €1m of sales in the weeks that follow.