When tall, blond, and beautiful Ellen Baxter enters the Paris Ritz the day before Princess Diana dies, she's mistaken for Diana by the paparazzi. The next morning, as Ellen's older, Nobel-laureate husband attends a physics conference, she goes to the site of the fatal crash and finds an uncharacteristic photograph of Diana. Surprised by how deeply the death has affected her, Ellen pockets the photo. As she hears Diana's voice in her head and begins...