[ There's a reluctance to say the next part, and he pauses before dragging his focus back to big Merlin (and I am so ashamed to be using that in a remotely serious context jsyk). ]

I think I saw someone else - someone who wasn't at the castle. One of Arthur's knights. [ A beat. ] And there was something seriously wrong with him.

[ Sadly, he's mostly referring to the pink outfit. But also the not remembering and the threats of execution, of course. ]