Something’s Coming in Sherlock’s Season 4 Teaser

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Is the delightfully evil antagonist James Moriarty back for season four of Sherlock? We're not totally sure, but it seems pretty damn likely, if the first teaser from Sherlock's upcoming fourth season is any indication. What's certain, though, is that things have never looked darker for the Baker Street boys (Benedict Cumberbatch and Martin Freeman) as they do some sleuthing while butting heads with a new villain played with great panache by Toby Jones. But seriously, where you at, Moriarty? Sherlock will return to PBS in 2017.