Hi! I am having major troubles finding the Sinister Presence in many of the chronicles. I have used the coordinates used in the guides you find online and in some of the chronicles I did find the presence, but in most there is nothing to be found in the whole chronicle. Trust me, I searched for hours I tried mentoring down and everything and am out of ideas.
Take a look at the co-ords here,
Some Sinisters spawn after you kill a certain boss,
And the main key to finding sinisters is /Target Tormented
so you can find the "sleeping" NPCs, kill them to bring out the sinister.