Indiscretion

Harry and Madeleine Winslow have been blessed with talent, money, and charm. Harry is a National Book Award–winning author. Madeleine is a woman of sublime beauty and grace. The Winslows play host to a coterie of close friends and acolytes eager to bask in their golden radiance, whether they are in their bucolic East Hampton cottage, abroad in Rome, or in their comfortable Manhattan brownstone.

One weekend, Harry and Maddy meet Claire, who eagerly falls into their welcoming orbit. But soon h...