Aredian established himself as a mercenary witchfinder, making a name for himself by selling his services of hunting down sorcerers. He had a distinct lack of concern for others and cared solely for his payment, but had a sufficiently impressive reputation for Uther Pendragon to seek his services when he believed a sorcerer was present in Camelot after Merlin's magic was witnessed by a peasant woman. Having previously met Gaius at some point in the past, the two were not on good terms. Aredian immediately began interrogating various members of the household, starting with Merlin.