Twenty years ago, before she wrote The Orchid Thief or was hailed as “a national treasure” by The Washington Post, Susan Orlean was a journalist with a question: What makes Saturday night so special? To answer it, she embarked on a remarkable journey across the country and spent the evening with all sorts of people in all sorts of places—hipsters in Los Angeles, car cruisers in small-town Indiana, coeds in Boston, the homeless in New York, a lounge band in Portland, quinceañera revelers in Phoenix, and more—to chronicle the one night of the week when we do the things we want to do rather than the things we need to do. The result is an irresistible portrait of how Saturday night in America is...