But who is Enric Marco? A veteran of the Spanish Civil War, a fighter against fascism, an impassioned campaigner for justice, and a survivor of the Nazi death camps? Or, is he simply an old man with delusions of grandeur, a charlatan who fabricated his heroic war record, who was never a prisoner in the Third Reich and never opposed Franco; a charming, beguiling and compulsive liar who refashioned himself as a defender of liberty and who was unmasked in 2005 at the height of his influence and renown?

In this extraordinary novel - part narrative, part history, part essay, part biography, part autobiography - Javier Cercas unravels the enigma of the man and delves with passion and honesty into the most ambiguous aspects of what makes us human - our infinite capacity for self-deception, our need for conformity, our thirst for affection and our conflicting needs for fiction and for truth.