It is 1965 and young Alexandra Crewe obediently marries the man her father has selected for her. But very soon both she and her husband Laurence realize that their marriage is a disaster. When real love finds Alexandra, she is powerless to resist. Her home becomes Fort Stirling, a beautiful Dorset castle, but Alexandra fears that there will be a price to pay for this wonderful new life. When tragedy strikes, it seems that her punishment has come, and there is only one way she can atone for her sins. In the present day, Delilah Young is the second wife of John Stirling and the new chatelaine of Fort Stirling. The house seems to be a sad one and Delilah hopes to fill it with life and happiness, but it seems that the forces of the past might be too strong for her. As Delilah searches for the truth, she realizes that perhaps some secrets are better left buried.