Download or read book The Lone Sentinel written by Jo Dereske and published by Atheneum Books. This book was released on 1989 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: At his father's untimely death, a teenager assumes control of a light tower at the bleak and lonely outpost of the universe--a job he feels capable of handling until the arrival of two teenaged girls and a group of aliens.