Mysterious chronicle (part 23) is a book found only in Daemonheim. It may appear in front of the dungeon-ending ladder after killing a boss monster.
It was written in the year 0 of the Fifth Age. Bilrach hears that some are calling this the beginning of the Fifth Age. He dislikes it being called the Age of Man, and renames it the Age of Reckoning. He allows a small celebration but cannot permit much revelry this close to The Rift.
Bilrach also shows that he has continued contact with the outside world.
Year 0 of the 5th Age:
I've heard that some are calling this the beginning of the Fifth Age; it would seem suitable if they weren't calling it The Age of Man. Bah! I rename it The Age of Reckoning! I will allow the humans three hours to celebrate, and then we work again. I will not allow them any longer than that: revelry leads to rebellion, and I cannot afford to massacre them as we get so close.Zamorak be praised!