The Wise Child — Jessica Stirling

Both Kirsty and Craig Nicholson sacrifice lovers to hold their marriage together for the sake of their crippled son. For a time all seems well until Kirsty seizes an opportunity to buy a small shop and makes a roaring success of her new career. Lonely and rejected, Craig seeks ways to gain the upper hand on his wife and her partners until only a brittle band of conscience stands between them and ruin.