Family secrets have the power to both wound and heal. In 2014, introverted Lauren finds old love letters stashed away in a hotel that is being renovated. Intrigued by the mystery, she starts to trace the love affair chronicled in the epistles. Woven into the book is a second plotline set in 1926, focusing on Violet, a waitress at the Evergreen Spa Hotel, and Flora, a well-off woman who serves as her brother's caretaker. Violet has fallen in love rashly, and Flora is engaged to marry a man she doesn't love. The events of 1926 have long-lasting impact, reverberating into the present.