The Witchfinder (S02E07)

Determined to eradicate magic from Camelot once and for all, Uther enlists Aredian, a ruthless witch hunter notorious for his relentless pursuit of sorcery. Although no one is openly accused, the atmosphere in Camelot is tense as fear grips its inhabitants. Morgana is anxious that Uther might turn on her and issue a death sentence, while Gaius frets for both Merlin's safety and his own, knowing that protecting the young warlock is deemed treasonous. Can they all evade a grim destiny?