Actors Robert Downey Jr and Guy Ritchie will be starting work on a third movie in the Sherlock Holmes series before the end of the year. The film has been in the pipeline for nearly five years, reported Digital Spy.

"We're talking about it right now. We can do some preliminary stuff," Downey Jr told Shortlist - putting those fears at bay. "If we could shoot it on Skype, we could have the whole (movie) done in a week." Downey Jr said.

He added, "When we're making those Sherlock movies, it is off the hook. (So) we'll attempt to make one this year. It really is a big deal to go and do those movies. I'm tired all the time, but I'm so excited about it." The movie will be the third in the franchise after Ritchie's 2009, Sherlock Holmes and 2011's follow-up, Sherlock Holmes: A Game of Shadows.