This has been bugging me for weeks now — you know how Steve Moffat (in reference to The Reichenbach Fall) kept saying that there was something we all had “missed”? Now that series 3 has aired, did we ever establish that that ‘thing that we missed’ even was? Did he say anything else on the matter? What if the was referring to Moriarty’s supposed suicide? As some people have pointed out, it’s never mentioned in the papers that they found Richard Brook’s body… Is that what we all missed?

I don’t think Moffat ever said specifically what he’d been referring to, but my understanding is that it was probably the ball Sherlock was playing with in the lab, which he later used to temporarily block the pulse in his wrist.  He said it was ‘something uncharacteristic’ Sherlock had been doing in the scenes before he died, so definitely not Moriarty’s body. 

I never gave much credence to Moffat’s ‘everybody missed it,’ because considering the number of theories that were going around, clearly he couldn’t reasonably assume he had seen them all, which meant he was only generalizing.