For Those About to Read

I thought it was way too easy to kill Klaus again. I mean c'mon!! They had an extremely difficult time killing him the first time. And then he's resurrected and all he has to do is drink Elena's Guardian blood to die again, and for good this time?
I was going to give this book a lower rating, but I really liked the last couple of chapters. Although, I'm not sure how I feel about Elena being Katherine's half-sister....