totheverybestoftimes:If Moriarty being alive was the Big Reveal of this episode,they would not...

totheverybestoftimes:

If Moriarty being alive was the Big Reveal of this episode,
they would not have filmed it out in the open. During the filming for TAB, NO
ONE saw Andrew on set. We didn’t know he was going to be in the episode until
it aired. Same with the filming of HLV. They’ve done this before. They know how
to hide actors they don’t want seen. If they’re being careless about it now,
then I don’t doubt that it’s the biggest red herring of all time.

Moriarty will not be the be-all, end-all of this series.
There’s other things going on that we don’t know about. And THAT is where the
drama of this episode is going to lie; in the reveals that are actually
reveals, the ones that no one saw coming.

I do believe this is true. If the big climactic villain of S4 was to be Jim Moriarty, back in the flesh, we wouldn’t have seen it or been able to film it. So I have no doubt Jim appears in S4.E3 in some way, but he’s not the main point.