Yellow Pages of History

Collect information concerning "temporal anomaly" in the ruins of Skrakan’s tower at the bottom of the lake and from people in Upper City.

Curious. Letters are barely readable, and the terminology is not clear, but basically, it says about some kind of "temporary anomaly" created by Skrakan. But no further details whatsoever. It’s only clear that Skrakan held his experiments in a ritual hall under the ancient tower in a lake near Upper city.
You ought to examine the ruins closely. You might find something that will tell you more about the experiment, and reveal the way to fight the Leper.

I’ve never seen you before! Is it clear?

I never took a thing! I’ve been framed! I’m innocent!