Photo: BBC Sherlock’s New Nemesis

Lars Mikkelsen, brother of actor Mads Mikkelsen and a talent in his own right, will serve as a major antagonist in the upcoming third series of the BBC’s “Sherlock”.

Producer Sue Vertue revealed the first photo of Mikkelsen in character today, that of Charles Augustus Magnussen.

The character is based on Charles Augustus Milverton, the “king of blackmailers” who appears in one of Arthur Conan Doyle’s short stories from “The Return of Sherlock Holmes”.

He’s also a man who “causes Holmes more revulsion than any of the 50-odd murderers in his career.”