Book: Hugh Howey's "Shift"

Hugh Howey's "Shift" is the second book of his Silo series.  I read the first book, "Wool", earlier this year.

"Shift" is a prequel in a sense.  It tells the story of the creation of the Silos described in "Wool" and takes you through the few hundred year history of them.  The book ends once the history catches up with the end of the events described in "Wool".

I liked "Wool" better than "Shift".  By its very nature the story hops around through several parallel timelines and perspectives.  This made it a little hard to get into the story as much as I did in the first book.

Despite the issues I had, "Shift" is a worthy contribution to the story and I gave it four stars on Goodreads, the same score I gave "Wool".  I am interested in the third, and last book I believe, of the series and where Howey takes us next.