Abaddón El Exterminador by Ernesto Sábato

Set against the backdrop of a tumultuous Argentina, this novel delves into the existential struggles of its protagonist, a writer grappling with the blurred lines between reality and fiction. As he navigates a world rife with political unrest and personal despair, he encounters a cast of enigmatic characters that challenge his perceptions and beliefs. The narrative unfolds in a labyrinthine manner, reflecting the protagonist's inner turmoil and the chaotic external world, ultimately exploring themes of identity, morality, and the human condition in a society on the brink of collapse.