Above by Isla Morley

I was absolutely blown away by Above by Isla Morley.  Sixteen-year-old Blythe Hallowell is abducted from the side of the road and taken to an underground missile silo. Her captor believes that the world is about to end and that Blythe is a vital key to his plans for the future. For years, she struggles to survive in her new underground world, confident that someday she'll make it back to her loved ones and the surface. It never crosses her mind that the stories that Dobbs tells her about the devastated world above might be true...

The publisher compares this book to Room (which I loved) and The Lovely Bones (which I just brought home from the library this week.) I'd add The Road to that list.

Disclosure -- the publisher provided me with an electronic review copy.