Mysterious chronicle (part 13) is a book found only in Daemonheim. It may appear in front of the dungeon-ending ladder after killing the boss monster.
It was written in the year 1533 of the Fourth Age. Bilrach is pleased to see that those servants who stayed on higher floors are moving downwards, and that there is a mass exodus. He believes this to be the work of a higher power.
Year 1533 of the 4th Age:
Finally, those fools near the surface who refused to follow were forced by their need to survive! To think I didn't have to lift a hand in the end.
Today, I hear of a mass exodus, all moving down to this depth. I know this is a higher power's doing, bending the will of the world to my cause. I continue.Zamorak be praised!