Dovie Larkin's life was shattered when her fiance committed suicide. Now, plagued by guilt, she has become a fixture at the cemetery where he's buried, visiting his grave daily. One day, she sees an old woman whose grief mirrors her own leave a letter on a nearby grave. Dovie ignores her conscience and reads the letter - a mother's plea for forgiveness to her dead daughter - and immediately needs to know the rest of the story. As she delves deep into a decades-old mystery involving one of Charleston's wealthiest families she starts to discover the keys to love and forgiveness.