It has been confirmed that Mordred will return in Series 4 and it is possible that he will team up with Morgana to make Merlin pay for betraying them.

In the official Series 4 trailer Mordred is faintly heard saying "Emrys" when Merlin gets pushed against a 墙 由 magic and it is possible that Mordred is the one who pushes Merlin against the 墙 to take his revenge on him for his betrayal.

So what may happen?
Whos excited?
And do 你 think katie will let off spoilers like last time? :)

Merlin trailer will be 发布 in the 视频 later on tonight (:

Jay