The Innocents by Francesca Segal

A triumphant and beautifully executed recasting of Wharton's "The Age of Innocence." Marrying Rachel will cement Adam's role in a warm, inclusive family he loves. But as the wedding gathers momentum, Adam feels touches of claustrophobia, and when Rachel's younger cousin Ellie moves home from New York, she unsettles Adam more than he'd care to admit.