To those who knew her, Grace Dearden is an extraordinary woman. Beautiful, clever - and admired. But Grace has been missing for over a week, leaving no clue as to her whereabouts. Even to the police, dutifully combing the lonely Norfolk marshes, she seems to have simply vanished into the black depths of winter. A desperate call from Grace's husband summons the help of Alex O'Neill, an old family friend. But even she finds the truth as elusive as the sea's rising tide... Download and start listening now!