Every summer throughout her childhood, Florence would return to her family home on the west coast of France, where she would be joined by her exotic, hopelessly glamorous cousins and life as she knew it would begin under the benevolent eye of her grandmother Mimi. It was a heady existence of illicit drinking, stolen kisses and the bittersweet pains of first love.

But now Florence is living completely alone with her new baby. Haunted by nightmares, she cannot open the letters from her grandmother accumulating on her mantelpiece. What devastating truth do these letters hold? Why has Florence turned her back on her past? And will she and Mimi ever be able to escape the guilt that is tearing them apart and has shaken their family to its very core?