The book "Watchtower" by the famous writer Randall Garrett is an exciting fantasy novel about the war between the armies of light and darkness for power over the magical tower that maintains the balance of power in the universe. The main characters are brave guards who will give everything to protect the world from evil. The author skillfully combines an adventure plot with philosophical reflections on good and evil, faith and the power of friendship. "Watchtowers" is a book that will grab you from the first pages and won't let you go until the last.