1)I debated with myself whether to post this as one or two stories. I went with one, as to me it's all one big story.   2)Of course, this story is all about the return of the Master. We start out with the mystery of Professor Yana - once we know he's a disguised Time Lord, we wonder which Time Lord.  Here we have another moment that divides those who are strictly fans of the new show from those o…