In their ten-year marriage Emma and James Hamilton have weathered many storms but have always been there for each other. Moving to London for James's new job is hard, but Emma is determined to make it work. After all, it's the right thing for their family and family is everything. So, when she and James start getting texts from a stranger - texts that show startling insights into their lives - Emma is shaken. Before long she is questioning everything. Maybe the stranger is telling her the truth, and the life she believed to be solid and secure is just a mirage. Somehow Emma has to get a grip, but how can she do that when someone is set on driving her out of her home and her marriage?