Edinburgh, January 1732.

It's the funeral of Rachel, wife of Lord Grange. Her death is a shock. Still young, she'd shown no signs of ill health.

Rachel is, however, still alive. She has been brutally kidnapped by the man who has falsified her death: her husband. Her punishment, perhaps, for railing against his infidelity – or simply for being too feisty for a lady and never submissive enough as a wife. Whether to conceal his Jacobite leanings or to replace his wife with a long-time mistress, Lord Grange banishes Rachel to a remote island exile, to an isolated life of hardship on St Kilda, where she can never be found.

This is the gripping story of a woman who has until now been remembered mostly by her husband's unflattering account. It's a remarkable tale of how the real Lady Grange may have coped with such a dramatic fate, with courage and grace