The Diamond of Darkhold is by Jeanne DuPrau. The fourth Book of Ember finds Lina and Doon returning to the abandoned city. Doon bought an ancient book from a roamer and believes that a gem has been left for the people of Ember that will make their lives better and help them to rebuild their world. This is a much better tale than the second or third books in this series. The excitement and adventure will be enjoyed by boys and girls alike.
Ratings: 7th grade - 8 out of 10.