Klaus Mikaelson was with Stefan in their turning hybrids mission (which they were failing to do). As they were with a pack, Elijah and you show up to stop them from killing werewolfs Niklaus Elijah said to KlausStop this madness Elijah, haven’t I told not to interfere in my plans? Klaus says angrily. Me and Stefan have a job to finish You can’t keep doing this Elijah pleads I told you not to get in my way Klaus snarls