Eagle eyed tweeter, @TheDoctorsJawn has spotted “the little something” Steven Moffat has often said is in the infamous scene from The Reichenbach Fall. If you look closely, you can clearly see the man pull out a bag of blood from inside his jacket pocket.
If you remember, just before his roof top confrontation with Moriarty, Sherlock told Molly he needed her assistance with something. Did she arrange the crowd? The man with the blood?
My personal theory is that Sherlock jumped into the parked, open topped rubbish truck. Then rolled out as it pulled away. The crowd gather to block Watson’s view, as this man covers him in blood.
What do you think, is this how Sherlock did it?