Kitty Montrose lives an idyllic life in the Scottish Highlands. An adored only child, she delights in the closeness she shares with her horse-riding mother and her gentle father. But her perfect world is shattered when her mother is diagnosed with clinical depression. The illness lurks in their home like a dark monster. Kitty finds solace and escape in the arms - and the bed - of her best friend Angus. Soon they are married, with a baby on the way. But what happens when Angus turns cold and unfeeling? Will Kitty regret staying with him for the sake of their child? And, years later, can Kitty's old flame, Theo Montgomery, help her to discover her perfect life? Or is it too late for them both?