The article also goes into details about the plot which “shares elements” with Sir Arthur Conan Doyle’s 1893 short story “The Final Problem”, the only story he had that featured Moriarty as a main character (he was only referenced in other stories).
Of course that story ended on one of the most famous moments in literary history with both Holmes and Moriarty seemingly falling to their deaths at Reichenbach Falls – Doyle killing off his creation which he had gotten sick of. A few years later though he penned “The Empty House” which resurrected Holmes and acted as a kind of sequel to ‘Problem’ – how much of that story will be incorporated here is anyone’s guess.
Of Moriarty, Ritchie says “Moriarty is one of the most famous villains of all time. But we didn’t want to make him a conventional character. The challenge was to still make him modern, believable. [Harris] brings a depth, a realism, that everyone was really excited about. He’s very relatable.”