"The Lady's Mine" by Francine Rivers is a historical romance novel set in 1870s California. The story follows Kathryn, a determined and independent woman who travels to the mining town of Calvada to uncover the truth about her sister's death. As she navigates the rough-and-tumble world of mining, Kathryn finds herself drawn to the town's charming but rough-edged mayor, and must confront her own prejudices and biases.