I've recently hit level 18 in Elder Scrolls Online. I've reached Grantwood and am doing various quests around the large tree in the middile, but I've started hearing voices after I kill something sometimes, anything from a level 1 monkey upwards. It says things like "you like killing, don't you?" and "how many more must die?"
I'm sure that there's no-one else around me when this has happened, and happens "in my (characters) head". I'm still fairly new to ESO and there's a lot of things that I'm getting used to, although this is...odd, to say the least.