Kitty Montrose lives an idyllic life in the Scottish Highlands. An adored only child, she swims in the Italianate pool of their ancestral home and delights in the closeness she shares with her horse-riding mother and her beloved dad. As a young teen, the perfection of her world is shattered when her mom is diagnosed with severe clinical depression. The illness takes up residence in their home like a dark monster lurking in every corner. Kitty finds solace and escape in the arms and bed of her friend Angus. Soon they are married, with a baby on the way. But what happens when Angus turns cold and unfeeling? Kitty needs a knight in shining armour. Can her old flame, Theo Montgomery, help her to discover her perfect life? Or is it too late for them both?