Sam's Letters to Jennifer by James Patterson
When her beloved grandmother is hospitalised, Jennifer returns to the lakeside home where she spent a magical childhood. There she finds a package of letters addressed to her that tell of passion, intrigue and desire. This is the real tale of her grandmother's life. It's a shocking family secret, concealed for decades, and the most moving love story Jennifer has ever heard.
Then comes the biggest surprise of all. Jennifer lets her guard down for a moment and is overcome by exhilarating new emotions. It might come with an unbearable cost - but her grandmother's letters make Jennifer think that love may help her find a way.