Imprisoned for 13 years. Isolated on the largest island in the St Kilda archipelago, over 100 miles from the mainland. In 1732, mystery and betrayal lurk around every corner. Lady Rachel Grange was kidnapped and imprisoned after her attempt to expose her husband's secret connections to the Jacobites to force him to leave his mistress backfires. She is instead removed from Edinburgh and shipped off to the Western Isles. 7 years later, we meet Reverend Ferchard Ross, a determined minister seeking to uncover her secrets. The Reverend must untangle a web of deception and the knotted threads of Lady Grange's tumultuous marriage to the formidable Lord Grange. With the elusive Lady of Hirta at the centre, the Reverend's tale takes him from St Kilda to London as the unsuspecting minister finds himself embroiled in malicious deceits, unrequited love and Jacobite rumblings. Where power clashes with passion against the haunting backdrop of one of Scotland's now uninhabited islands, will the truth be uncovered before it's too late?