Ancotar is an Altmer and Mages Guild wizard who likes his privacy, he currently resides at Fort Caractacus while performing research. Before the Hero's arrival, he had turned all living people and creatures within a wide radius of his fort, including himself, completely invisible. This caused a problem for the nearby small settlement of Aleswell. When the others are turned back to normal though, he stays invisible. Ancotar made the scroll that made them visible again, and made a protection ring so that there weren't any side effects on the caster.
Using the scroll in the area around Ancotar will make him visible and angry at the Hero for taking away his privacy.
One of Ancotar's experiments have made all living things in a close vicinity invisible. This includes all the people in the nearby settlement of Aleswell. The Hero must help them be visible again.
"Oh... Really? Everyone in town? That must have been what all the shouting was about a few weeks ago. I'm afraid I was engrossed in an experiment that required my full attention. You see, in order to increase the efficacy of the spell, the radius was likely to approach the... never mind. I don't mean to bore you."