The BBC has announced that Toby Jones (THE MIST, CAPTAIN AMERICA: THE FIRST AVENGER) will star opposite Benedict Cumberbatch and Martin Freeman as the villain in Season 4 of Sherlock. The network didn't release any details on his character, however he will make his debut in the second episode of the three-episode series. Jones says he is "excited and intrigued by the character I shall be playing in Sherlock."
Co-creator, writer and executive producer Steven Moffat said, "Delighted to have Toby Jones on board, bringing to life one of [Sir Arthur Conan] Doyle’s finest villains," while fellow co-creator Mark Gatiss added, "We're thrilled to welcome one of our finest actors to the Sherlock family. I know Toby will embrace the part with true relish!"
The new season (which officially kicked off production on Monday) will begin "with the nation’s favourite detective, the mercurial Sherlock Holmes, back once more on British soil, as Doctor Watson and his wife, Mary, prepare for their biggest ever challenge – becoming parents for the first time."
Sherlock Season 4 is expected to debut in early 2017.