The book "Night of the Trolls" by the author Keith Laumer is an exciting fantasy about the adventures of a group of brave heroes who go on a dangerous mission to conquer the evil troll kingdom. Led by the main character, a hero with Viking roots, they encounter unseen obstacles, mysterious wizards and treacherous enemies on their way. This book is filled with intense battles, magic, and unexpected twists that will keep the reader in suspense until the last page. "Night of the Trolls" is an exciting journey into a fantasy world where good and evil fight for power, and courage and friendship are the keys to victory.