Watch for Me by Moonlight

"Another fabulous supernatural read" in which a long-buried mystery is revealed, and two unrequited lovers are bound by its danger (Books and Me). After her marriage and her life in London fall apart, Elodie Bright returns to Hartsford Hall to spend time with her childhood friend Alex. He's always been a rock for Elodie, and now that he's become the Earl of Hartsford, she throws herself into helping him renovate the old house and its grounds. After a freak storm damages the Hall chapel and destroys the tomb of Georgiana Kerridge—Alex's ancestor from the 1700s—Elodie and Alex find a shocking discovery brought to light by the damaged tomb. Through a series of unusual incidents, they begin to piece together Georgiana's secret past involving a highwayman, a devastating betrayal, and a forbidden love so strong that it echoes through the ages—and awakens the hidden affections Elodie and Alex have long held for each other.