Mysterious chronicle (part 27) 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 79 of the Fifth Age. Bilrach can feel himself pulsing from the power of The Rift now, as he draws closer to it. He makes great progress and wonders if his increased power comes from Zamorak, but then questions why his master has not broken through the rift himself.
Year 79 of the Fifth Age:
I pulse with it now: the power that seeps from the interplaner rift. I cannot be far, and we progress with exhilarating speed. I question whether my proximity to my Master has meant that he lends his power to mine. Wait - if He has such influence on this world, could He not break through Himself? I must not sully my purpose with doubts: the end is too close.Zamorak be praised!