by Jennifer Holm is a contemporary novel starring 11 year-old Ellie and her teenage grandfather. Her scientist grandfather seems to have discovered the secret to eternal youth and has reversed his age and is now a teenager. Living with her single mother, a high school drama teacher, Ellie is slow to adjust to change. When her grandfather appears as a young boy, her life is turned upside-down and they each teach each other a few lessons about life.
