Mira Troy, better known as Moriarty, is a major antagonist in the Enola Holmes films in the Sherlock Holmes franchise.
Secretary to the Chancellor of the Exchequer Charles McIntyre, Troy was responsible for negotiating with the police to silence anyone who caught one with the plans to use white phosphorous in the match factory instead of red phosphorous. Ultimately, Troy was foiled by siblings Sherlock and Enola Holmes, but she still manages to give the pair plenty of trouble.
The character was portrayed by Sharon Duncan-Brewster.