Wool

Don't ask to go outside.

For hundreds of years, people have lived in the underground silo, with no knowledge of why the outside is deadly.  There are rules upon rules that the residents must abide by, but not all of them are meant to keep them safe.  This is a suspenseful thriller with a strong female protagonist, and part one of a trilogy.  If you’ve watched season 1 of the AppleTV show Silo, never fear!  About 45% of the way through the book you hit new material.