At this point, the pay off better be good and a surprise. Nardole seemed a bit worried about the piano but the Doctor was not concerned. So who, or what, is in there? And why?? I think Moffitt said we'd know by episode 5. So stay tuned!!

So, if it's John Simm in the vault, how cool would the surprise have been if we didn't know that he's returning to the show? I've grown tired of these spoilers that take away from prospective excitement. Not just here, but in a lot of movies and TV programs. It seems that studios and/producers go for short term…