It's usually pretty easy to get quickly drawn in by Diane Chamberlain's novels, and this one does not disappoint. In fact, The Silent Sister is a great page-turner.
Riley MacPherson is the protagonist in this story. She is a young woman in her mid-twenties who has the unpleasant and depressing job of clearing out her childhood home after her father passes away. She discovers that her family kept many secrets during the time she was growing up, including a really huge one concerning her older sister. Very enjoyable!