This book was recommended by my brother-in-law, and after the first few pages I was afraid he was possibly smoking crack. However, I kept going (I'm stubborn that way), and soon found myself quite enjoying the story.

The residents of Safehold are the last surviving earthlings - they were hidden away after the rest of humanity was destroyed by a technologically advanced alien race (I know, right?) and have lived in a world devoid of (and with religious proscriptions AGAINST) technology for over 800 years. The story revolves around one person who knows the history & the truth and sets out to change the world.

That's a rather poor description, but the story, although incredibly more wordy than I prefer in many places, was engaging (once the space battles were over), and I've already picked up the second in the series to learn more.