There’s been a whole host of theories speculating how Sherlock survived The Reichenbach Fall last Sunday.

Co-creator Steven Moffat revealed that he’s been checking them out, but one vital clue has still been overlooked.

“I’ve been online and looked at all the theories,” Moffat told the Radio Times, “and there’s one clue that everyone’s missed.

“It’s something that Sherlock did that was very out of character, but which nobody has picked up on.”

What could it be?