I don't know what to say without giving anything away, because I loved reading it without knowing much about it. So this will be brief.
I actually debated starting
Code Name Verity, because it was due back at the library since someone had requested it, and I didn't want to have to stop halfway through. Needless worry, since I would only put it down very reluctantly... I even held onto it while I watched my Sunday night teevee shows, reading it during commercial breaks.
What can I say without revealing too much? I mean, I think the book's description on GR gives away more than I'd like to have read before I read the novel. Let's try this:
Code Name Verity is a YA novel, historical fiction in the World War II flavor. At its heart it's the story of a friendship between two young women -- one a pilot, one a spy -- and it's an epistolary novel, but don't let that scare you off. IT'S GOOD. It has CAPSLOCK! It's an adventure.
And I didn't cry much during the first half, and thought I'd gotten off easy, but then I made up for it during the last half, so I GUESS YOU WIN, WEIN.