the diamond of darkhold. the fourth book in the series of ember. Now, the diamond of darkhold is about, a roamer comes to town, and they find this book. They get it and call it, the book of eight pages, cause all the other pages are torn out. The title says, for people of ember, so doon and lina go back to ember to see if they missed anything on there way out. Really awesome. I just finished it. Hope you like it. :) :)