Mark Gatiss is no stranger to hit shows. He’s written and starred in episodes of Doctor Who, and he’s the co-creator of Sherlock – he also plays Holmes’ snarky and uptight brother, Mycroft.
Now, it’s been revealed that Gatiss will join Game of Thrones in season four in a role that’s being kept under wraps.
Book readers, speculate! Who will Gatiss play? What do you think of this casting news?