Résumé de Turtles All the Way Down

John Green's novel, *Turtles All the Way Down*, centers on Aza Holmes, a 16-year-old high school student in Indianapolis grappling with severe obsessive-compulsive disorder (OCD). Her internal life is dominated by an overwhelming fear of infection and a constant battle to distinguish her own consciousness from her physical body and its microbial inhabitants, particularly fixating on organisms like *C. difficile*. This existential struggle is frequently framed by the titular philosophical concept of infinite regression, reflecting Aza's feeling of being trapped within endless layers of thought and self. The narrative's external catalyst arises with the disappearance of billionaire Russell Pickett, Aza's former childhood friend Davis Pickett's father, who is wanted for fraud and bribery. A significant reward is offered for information leading to his apprehension. Aza's best friend, the more outgoing and Star Wars fanfiction-writing Daisy Ramirez, persuades Aza to rekindle her connection with Davis, hoping they might uncover clues about his father's whereabouts and claim the reward. As Aza navigates the complexities of her re-emerging friendship with Davis and the external mystery surrounding his family, the novel deeply explores the isolating and relentless nature of her mental illness. It portrays her specific anxieties—such as the compulsion to repeatedly disinfect a small cut or her profound fear of internal contamination—and the immense effort required to maintain relationships and experience a semblance of normal adolescence. Green meticulously details Aza's spiraling thought patterns and her struggle for selfhood, making her internal landscape as compelling and intricate as the external world, without offering simple answers to her profound suffering.