If you acquire the thief's journal before starting the quest, the quest is added and advanced to stage 85: "I found the thief's journal. It might be enough to prove Marlene's story."
This journal entry does not make sense because you have not met Marlene, nor do you know what her story is, nor why you should want to prove it.
During the third challenge, Saturius used the Icarian Scroll I gave him before the challenge against Kelmello began. From what I've watched and read, Kelmello should be high up into the air when the spell was cast and immediately surrender upon taking fall damage. Saturius however casted the spell and Kelmello would only jump a few heights then fall. This ultimately locks the next stages of the quest.
Depending on your placement, when you activate the lever and start going up, you can be killed, I'm guessing crushed between the lift and something in the walls (?).
In the Hlerynhul quest Prince and Pauper, Bolor Sarthendas does a scripted Almsivi Intervention to the Hlerynhul Temple. However, if the player wishes to follow them by doing the same, they end up at the Eight Bones Temple in Narsis.
