While neither Ritchie, Pitt, or producer Joel Silver will comment on whether Pitt already makes a shadowy appearance in the upcoming film. Those who have read the script say that Moriarty does appear, but is all mysterious and silhouetted, and it's impossible to see who he really is.
As Pitt debates whether or not he wants to pit brainpower and martial arts against the elementary Robert Downey Jr., the studio has brought on Kieran and Michele Mulroney, the team behind their Justice League: Mortal project to pen the script. Though nothing is official yet, THR notes "much of the talent," notably Downey, Jude Law, Rachel McAdams, and Ritchie are expected to return. (Mark Strong isn't mentioned. Spoiler or no surprise?) It's worth noting that if Pitt signs on and the line-up remains as is, there's only one native Brit in the entire cast of this very English classic.