"Scotland, 1856. After years of trying, doctor's wife Isabel Aird has given up hope of ever becoming a mother -- despite being pregnant once more. She follows her husband Alexander away from their cosseted existence in the city to the site of a huge engineering project in Loch Katrine, which will deliver clean water to a disease-ridden Glasgow. And amidst the wilderness of the Scottish Highlands, Isabel begins to discover a new sort of freedom. But...