In 1814, Sara Stevenson, the high-spirited daughter of celebrated Scottish lighthouse engineer, Robert Stevenson, disgraces her family by falling in love with the young sailor, Thomas Crichton. The two lovers embark on a clandestine affair and decide to elope, but on the day of their elopement Thomas fails to show up as planned, leaving Sara heartbroken and at the mercy of her overbearing family. Learning of their daughter’s fallen state, and seeing that Sara is unwilling to give up her obsession with the sailor, the Stevensons banish their daughter to the eerie outpost of Cape Wrath, the setting of their most desolate lighthouse. There Sara is forced to live with the dashing, reclusive light-keeper, William Campbell, a man rife with dark secrets. While Sara continues to search for Thomas, she becomes more entangled with the unsettling lightkeeper. And just when she’s about to give up hope of ever finding her young lover again, a mystifying package arrives containing Thomas’s treasured pocket watch. Clinging to hope, Sara continues to correspond with the sender, an antiquarian from Oxford. And what she learns from this extraordinary stranger will not only help her unravel the mystery of Thomas’s untimely disappearance, but also compel her to face her feelings for William Campbell, a man with demons of his own, and a growing love for the beautiful young woman placed in his care.