Returning to Spain after fighting in the Battle of Lepanto and other Mediterranean campaigns against the Turks, the soldier Miguel de Cervantes was captured by Barbary pirates and taken captive to Algiers. The five years he spent in the Algerian bagnios or prison-houses (1575-1580) made an indelible impression on his works. From the first plays and narratives written after his release to his posthumous novel, the story of Cervantes's traumatic experience continuously speaks through his writings. This text offers a comprehensive view of his life as a slave and, particularly, of the lingering effects this traumatic experience had on his literary production.