Sarah Dunn has worked as a senior writer for Murphy Brown and the executive story editor for Spin City. She was a co-producer for Veronica's Closet before leaving TV to write her first novel, The Big Love, which has been translated into 23 languages. She lives in New York City.

Lucy and Owen, ambitious, thoroughly-therapized New Yorkers, have taken the plunge, trading in their crazy life in a cramped apartment for Beekman, a bucolic Hudson Valley exurb. They've got a two hundred year-old house, an autistic son obsessed with the Titanic, and 17 chickens, at last count. It's the kind of paradise where stay-at-home moms team up to cook the school's "hot lunch," dads grill grass-fed burgers, and, as Lucy observes, "chopping kale has become a certain kind of American housewife's version of chopping wood."

When friends at a wine-soaked dinner party reveal they've made their marriage open, sensible Lucy balks. There's a part of her, though-the part that worries she's become too comfortable being invisible-that's intrigued. Why not try a short marital experiment? Six months, clear ground rules, zero questions asked. When an affair with a man in the city begins to seem more enticing than the happily-ever-after she's known for the past nine years, Lucy must decide what truly makes her happy-"real life," or the "experiment?"