Hmm..
In the second, er, third book, Karsh starts out as a ghost.
Could be that the first ‘two’ are the narrated, sorta, tales of how he got to be a ghost living in exile in the Frost Wastes.
I would assume that even in your narrations, becoming a ghost is an unusual thing.
For what reason did he become a ghost?
Is he going to bring himself out of it after a bit? My character had to do it the hard way. (Chapter One of Book Four ... “Are You A Ghost Now?”)