Don't read the description of this. It gives away too much information and doesn't provide you with any idea on the vibe of the book. In Shift, we get the origin story of the Silo. Told in three parts, this tale was an intriguing follow-up to WOOL. Each part follows a working "shift" for the architect of the Silo. It has the same investigative energy of the first book but with a new twist. Overall, I thought it was a solid sequel. I still have a ton of logistical questions, but that's to be expected with these types of books. I love how the whole story feels original even though it follows the same beats of the genre. I found it familiar, but it still piqued my curiosity. 

I wasn't completely thrilled with the ending/ setup for the next book. I feel like the Silo should have made religion one of their taboos. Religion is always paired with the rise of fear and the downfall of commonsense in a society. You would think it would have been an issue earlier in the Silo's history.