As for the Tamil dubbed version, it's likely that the movie was translated and dubbed into Tamil to cater to the Tamil-speaking audience. Isaimini is known for providing pirated copies of movies, including dubbed versions, which are often downloaded by users.
Directed by Guy Ritchie, this action-packed take on the classic detective stars as Sherlock Holmes and Jude Law as Dr. John Watson. Sherlock Holmes 2009 Tamil Dubbed Isaimini