To prove her worth, architectural historian Elara Vance takes on a challenging assignment: documenting the remote and crumbling Blackwood Point Lighthouse on the rugged Cornish coast. Her plan for quiet, meticulous work is shattered by the lighthouse's keeper, Liam Cormac—a brooding, solitary artist who is fiercely protective of his home and the dark family history that haunts it.

Forced to coexist in the isolated setting, their professional relationship is a stormy one. But when Elara uncovers the initials of two secret lovers carved into the tower walls a century earlier, she and Liam are drawn into a tragic, forbidden romance between his ancestor and a woman from a rival family.

As they piece together the truth of what happened during a legendary storm, the walls between them begin to crumble. Liam's hostility gives way to a vulnerability Elara never expected, and she finds herself drawn to the man behind the gruff exterior. Together, they discover that the secret passed down through generations was not one of cowardice, but of a profound sacrifice. Can a love story from the past light the way for their own future?

The Lighthouse Keeper's Secret is a sweeping, atmospheric novel about love, loss, and the secrets we keep.