Javier Cercas and Mathias Énard

What happens in the distance that separates the author from the narrator? Is fabulation, sham or imposture inevitable when practising the art of the novel? Two great European novelists, Mathias Enard and Javier Cercas, will be discussing this very old yet very new subject in their own experiences as the authors of, among other major works, Zona, which narrates the adventures and travels around the Mediterranean of a spy (the artist of imposture), and El impostor, portraying Enric Marco, who falsified his biography to appear as a survivor of Nazi concentration camps.