Here is a spoiler, everyone dies. GRRM is a one trick pony.
We don't know that. Many of the characters introduced in the first book are still alive at the end of the fifth book (say half, as a very rough and intentionally vague estimate.) I'd be more specific, but...
Oddly enough, this is why I didn’t read the review of Dance of Dragons past the first sentence. Knowing someone is alive in book 5 is actually a spoiler for books 2, 3 and 4.