In 1946, flirty, feisty Imogene Grayson finds her world destroyed when her sister, Hazel, is murdered in their family farmhouse. Determined to uncover the killer, Imogene insinuates herself into every element of her sister's former life, convinced she'll discover the truth. In present day, Aggie Dunkirk arrives in a small town in Wisconsin to care for her aging grandmother, and to take a job helping restore the recently flooded cemetery. As Aggie digs into the mysteries of the dislodged headstones, she uncovers a secret that's been hidden for decades—a secret that someone will go to any lengths to keep buried.