'Sherlock' Season 4 set for release on January 2016; Tom Hiddleston to play the character of Sherlock's brother
British actors Benedict Cumberbatch and Martin Freeman will be reprising their roles as modern day detectives Sherlock Holmes and John Watson, respectively. According to reports, this fourth season will be a darker season compared to the previous seasons, most likely because of the possible death of one of the show's main characters. Meanwhile, 'Thor' star Tom Hiddleston is rumored to play the character of Sherlock's brother who will be making an appearance in the upcoming season.