There's One Way Sherlock Can Meet Benedict Cumberbatch's Return Requirement (& It's Not Season 5)

The outstanding BBC drama Sherlock ended at season 4, and Benedict Cumberbatch would only do it again if an important condition were met. Launching in 2010 with a three-part series that blew critics and Sherlock Holmes fans away, Sherlock modernized Sir Arthur Conan Doyle's Victorian story spectacularly for the small screen. From Benedict Cumberbatch's career-defining performance in the lead role to Andrew Scott's unpredictable Moriarty, the show nailed the "modern-day Conan Doyle" premise.