User blog comment:GWAINE/Merlin - Episode 5.10 - Press Release/@comment-5710580-20121117213206

So happy this is coming up again. I really hope Morgana will find out though I don't think she'll take it seriously either at first. But when she does...well, Merlin IS her doom...

I don't think Mordred will want to run into Morgana either, because he knows she'll hate him now, so I doubt he'll be the one to tell Morgana about Merlin being Emrys.

On the other hand, if Alator was that determined not to tell Morgana last season, it might do the same. Morgana might kill him or something for being allied with Merlin now, but that won't get her anywhere either, so we'll have to see.