 After the end of the final episode of the second series , Moffat and Gatiss both announced on Twitter that a third series had been commissioned at the same time as series two , and a part of the resolution to " The Reichenbach Fall " was filmed concurrently with series two . Without revealing whether Moriarty also faked his own death at the end of series two , Moffat suggested that Moriarty will not feature heavily in future series of Sherlock . 
