These Demons Are Clever

Acquisition
Near the second beacon is a book: ''Apostate Widris's Journal. ''He tells in it that someone has stolen his book, and that he will "write down the cipher again". He also apparently has made deals with demons. You will have to track down Widris.

Walkthrough
As you get the quest, you'll be given an area in the map to search. (Warning! There is a rift also in this area. It might be better to take care of that first.) This area is to the west from the third beacon, where also is a landmark "The Den". Go west from here as well, where there is a gap in the rocks. You should see another gap in the rocks as you go through, but to go through the second one, you have to touch water. So be prepared for some undead rising. Follow the water-path (to north) and you'll see Widris.

Widris will summon wights to help him, and has some armour. After defeating him and all the wights, the quest will be completed. There are several things to loot from his camp, including a fire staff for mages.