According to a press release from Penguin Random House, the book, titled Turtles All the Way Down, is about sixteen-year-old Aza Holmes, a young woman looking for clues in the disappearance of a fugitive billionaire, while grappling with mental illness. It's about lifelong friendship, the intimacy of an unexpected reunion, Star Wars fan fiction, and tuatara. But at its heart is Aza Holmes, a young woman navigating daily existence within the ever-tightening spiral of her own thoughts.