If We Survive is the third book I've read by Andrew Klavan (the first two being The Last Thing I Remember and The Long Way Home) and definitely my favorite so far! It was a thrilling ride and held my attention throughout!
I loved how realistic the characters were - one in particular was very dramatic and got upset a lot (to the point of being annoying), but given the circumstances, I understood why she'd be that way. My favorite character was definitely Palmer! I just loved so much about him (his courage, how he acted, things he said, etc.).
The story was great and I don't think there was ever a time I was bored while reading If We Survive... there was just so much action!
If We Survive was a wonderful read that I loved! I think teens (and adults!) who like action books with some pulse-pounding moments will enjoy this book. I definitely recommend it. I look forward to reading more of Andrew Klavan's books in the future.