In Guy Ritchie's upcoming big screen adaption of Sherlock Holmes, we already know the main players:

Robert Downey Jr. will be the iconic detective, while Jude Law is on board as his partner, Watson.

As for the villain they'll be pursing, British actor Mark Strong revealed to IGN UK who it would be: himself!

"For the purposes of this one and the detective narrative, I'm the guy that Sherlock's after, Lord Blackwood. And he's a cultist/Satanist lord who is the ultimate cad," Strong said.

The actor is seen here in his role from Body of Lies: