In 1999, after publishing three cult novels, celebrated author Nathan Fawles announces the end of his writing career and withdraws to Beaumont, a wild and beautiful island off the Mediterranean coast. Autumn 2018. As Fawles' novels continue to captivate readers, Mathilde Monney, a young Swiss journalist, arrives on the island, determined to unlock the writer's secrets and secure his first interview in twenty years.

That same day, a woman's body is discovered on the beach and the island is cordoned off by the authorities. And so, begins a dangerous face off between Mathilde and Nathan, in which the line between truth and fiction becomes increasingly blurred..