I just finished the 3rd book in Silo series by Hugh Howey. It was a fun journey. If you like science fiction and thinking about “what if our world ends in the virus attack” than those books are for you.

The world outside has grown unkind, the view of it limited, talk of it forbidden. But there are always those who hope, who dream. These are the dangerous people, the residents who infect others with their optimism. Their punishment is simple. They are allowed to go outside.

You can get free trial of kindle unlimited and get those books for free.