For the best viewing experience without the risks of unofficial sites, you can find the official Hindi dub on several platforms:
Often listed as Sherlock Holmes: Maut Kaa Khel in local markets. The "Fixed" Hindi Dub Controversy Sherlock Holmes 2 Hindi Dubbed Filmyzilla Fixed
An official Hindi dubbed DVD/Blu-ray was released by Sony DADC. Plot Summary (Spoiler Free) For the best viewing experience without the risks