I had a dream the other morning in which Merlin had returned to train up our children. "Our children", in this case, included both the boys, their cousin, and the hypothetical child of some friends of ours. I don't know what exactly he was training them for, except maybe to restore the court at Camelot and rule England? No idea.
I'm honestly not sure how we found him. I mean, he was living behind a pet door that led into what appeared to be an empty closet in an abandoned building. Still, it was good to see the old guy again; I hadn't spoken to him since high school.