Family is all-important to Isabel. Her parents have an idyllic marriage, and she has tried hard to create one for herself. However, all pretence is shattered when her husband leaves her. On top of this her father dies, leaving Isabel devastated. Then her mother confides in her: behind her parents’ apparently happy marriage was a secret kept for more than three decades. Isabel is staggered by the revelation. She is desperate to tell her sister, Grace, and her brothers, Rick and George. But her mother makes her promise to stay silent.