18 Books Every Mom Needs in Her Beach Bag This Summer

Claire Fuller's Swimming Lessons ($26) is a literary mystery that will keep you guessing until the end. Wife and mother of two Ingrid writes letters to her husband about the truth of their marriage, but instead of giving them to him, she hides them in the thousands of books he has collected at their house by the sea. When she's written her final letter, she disappears and is assumed to have drowned. More than a decade later, her daughter attempts to discover the truth behind her mother's disappearance.