From the #1New York Timesbestselling author ofBig Summerand undisputed boss of the beach read (TheNew York Times) comes another timely and deliciously twisty novel of intrigue, secrets, and the transformative power of female friendship.

Daisy Shoemaker cant sleep. With a thriving cooking business, full schedule of volunteer work, and a beautiful home in the Philadelphia suburbs, she should be content. But her teenage daughter can be a handful, her husband can be distant, her work can feel trivial, and she has lots of acquaintances, but no real friends. Still, Daisy knows shes got it good. So why is she up all night?

While Daisy tries to identify the root of her dissatisfaction, shes also receiving misdirected emails meant for a woman named Diana Starling, whose email address is just one punctuation mark away from her