Board Thread:Rewatching "Merlin" - Season Two/@comment-5102537-20130622090602/@comment-10341849-20130623003723

I am wondering, if in the past Uther said that Aredian had helped him find sorcerers in Camelot and Uther also respected him, that means Aredian is good in his job, right?

Why in this episode since the beginning he already used tricks (planting evidence, using Belladona to trick the witnesses)?

Why he didn't really do any real sort of detective job? He just planting evidence, tricked witnesses, threatening Gaius to confession, intimidated Morgana and Merlin. Although Aredian didn't like Gaius or even hated him and maybe he really like to see Gaius dead, that doesn't mean that he shouldn't do his real job like finding the real sorcerer, right? Is it because Merlin is the one responsible for the magic and that's why it is impossible to make that Aredian did find solid evidence against him?