Dinah Steward has a secret. Hidden beneath the comfortable family life she shares with her successful husband Matthew and their two sons lies a shameful secret that has haunted Dinah for fifteen years. She and Matt never speak of it or the impossible choice he forced her to make all those years ago: they think the cracks have been papered over. But when a chance encounter brings the past into sharp focus once more, Dinah realises she can no longer deny the truth. She decides to risk everything - her husband, her sons, her perfect lifestyle, in order to claim what was always hers.