It all begins with a fugitive billionaire and the promise of a cash reward. Turtles All the Way Down is 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.

Joseph LeDoux, whose NYU lab has been at the forefront of research efforts to understand and treat fear and anxiety, explains the range of anxiety disorders, their origins, and discoveries that can restore sufferers to normalcy.

Seventeen-year-old Molly Peskin-Suso knows all about unrequited love. No matter how many times her twin sister, Cassie, tells her to woman up, Molly can't stomach the idea of rejection. So she's careful. Fat girls always have to be careful. Then a cute new girl enters Cassie's orbit, and for the first time ever, Molly's cynical twin is a lovesick mess. Meanwhile, Molly's totally not dying of loneliness -- except for the part where she is. Luckily,...