User blog comment:Morganaforever/Series 4 Cliffhanger/@comment-4190137-20120222072812

Okay I have some evidence that almost nails the last theory, click the link (http://www.digitalspy.com.au/british-tv/s53/merlin/news/a352372/merlin-creators-johnny-capps-julian-murphy-twitter-qa.html) this is what they said...

Q: Will we get a glimpse of redemption for Morgana? A: "The end of this series is very surprising for Morgana! Stay tuned..."

They are referring to when Aithusa saved Morgana, and it has something to do with that question, what else could that mean?