There is an assassin that wants a piece of the Nigh Lords and he wants to kill each and everyone without any mercy. If the assassin succeeds then this would be the end of the Nigh Lords and this is one battle in which the chances of winning the game eventually are impossible.
The First Heretic and Blood Reaver: Warhammer 40,000 are fantastically written by Aaron. The story never breaks in these novels because they have a strong plot. The chances of survival for the hero are always few and far between and it takes a miracle to save the life of those who are on the right side. Without proper luck, the Night Lords are not going to survive at all.