"Upgrade" by Blake Crouch is a fast-paced science fiction thriller that explores the consequences of genetic engineering. The story follows Logan Ramsay, a government agent who becomes the subject of a mysterious gene modification that grants him superhuman abilities. As he uncovers the truth behind his transformation, he faces a moral dilemma about the future of humanity and the cost of perfection. Tense, thought-provoking, and action-packed, this novel delves into the ethical limits of science and evolution.