Wow, what a satisfying and gripping conclusion to the Silo saga. I enjoyed this book so much that I forgot to take review notes while I was reading it. I was so engrossed in the plot and so invested in the characters that I forgot that this was an ARC for review! 
 So, we are back with Juliette in Silo 18. She is the reluctant new mayor and is in the midst of a 'rescue plan' for her friends in Silo 17. At the same time we touch base with Donald & co in big bad Silo 1 as he wakes up to yet another new name and the task of saving the world (no pressure!) 
 As with the first two books, this is a fast-paced, gripping adventure. Though it doesn't necessarily push the envelope of literature, it is damn good entertainment. 
 Hugh Howey is a master of leaving you hanging between chapters, and I often wanted to scream "No! Don't end it there, what happens?" Luckily, the action in other places is just as thrilling so it does not remain a problem for long. 
 Sort of SPOILER ALERT so skip this paragraph if you don't want to know ANYTHING about the ending. 
 I loved the hopeful ending. Some people had a problem with it. Yes, there could have been other survivors to encounter or glimpses into other silos but sometimes the simple endings are the best. It was optimistic. He could have just ended it with a group heading out of the silo door - now that would have been frustrating! I am glad we were there to share the joy of the outside with them. 
 I love book to movie adaptations and am so excited to see that casting for Wool will begin next year. Yay!! 
 I gave the first two books 4 stars because I am difficult to please and there were tiny things I didn't like about them, but Dust gets the big one - 5 Stars! Thanks Mr Howey for a rip roaring adventure and I blame you for my lack of sleep this past week.