Under the Ice Blades - Lindsay Buroker

Under the Ice Blades falls between books five and six in the Dragon Blood series.

I knew there had to be some other book someplace. There were too many unexplained things in book six. This is where Kaika and King Angulus hook up. This is also where the dragon Morishtomaric is released from prison. This is another great story and a must read if you don't want to lose hair from scratching your head reading book six :) Very highly recommended.