This twisty novel from the New York Times bestselling author of We Were Liars and Genuine Fraud asks: What if there were infinite universes and infinite ways to fall in love?If you could live your life again, what would you do differently?After a near-fatal family catastrophe and an unexpected romantic upheaval, Adelaide Buchwald finds herself catapulted into a summer of wild possibility, during which she will fall in and out of love a thousand times--while finally confrontin