You are afraid of the border places. You are afraid of the fork in the road.

Fleeing her mistakes in Glasgow for a marriage of convenience, Norah Mackenzie’s new home on an estate far in the north of Scotland is a chance for freedom, a fresh start. But in the dim, draughty corridors of Corrain House, something is very wrong. Despite their warm correspondence, her distant, melancholic husband does not seem to know her. She is plagued by ghost ships on the sea, spectres at the corner of her eye, by winding, grasping roots. Her only possible companion, the housekeeper Agnes Gunn, is by turns unnerving and alluring, and harbours uncanny secrets of her own.

As the foundations crumble beneath her feet, Norah must uncover the truth about Corrain House, her husband, Agnes, and herself, if she is to find the freedom she has been chasing.