The Postmortal, written by Drew Magary, is a science fiction novel set in a world where a cure for aging has been discovered. The story follows John Farrell, a man who decides to undergo the 'cure' and live indefinitely. However, as society grapples with the consequences of immortality, including overpopulation and societal collapse, John finds himself questioning the transhumanist dream. The Postmortal explores themes of mortality, ethics, and the unintended consequences of technological advancements.