"Is The Master coming back? Who knows?" said Matt Smith last night at the launch of the Doctor Who Christmas special. It's one of many questions surrounding next year's 50th anniversary.
But if the Doctor's arch nemesis did return to wish him happy birthday and destroy the world, who would play him?
John Simm is the most recent actor to fill the role of the evil Time Lord but if he was to regenerate who would Smith like to see take his place?
“We’d love to have William Shatner on Doctor Who I’m sure. He’s a sci-fi God! He’d be great," Smith told Getty, before adding "John Simm is pretty damn good in the role, though".
Steven Moffat agreed: "I love William Shatner but John Simm is The Master... John Simm would beat [Shatner] up if he thought he was going to take that part."
And the Doctor Who showrunner suggested that signing the Star Trek icon up for another major sci-fi series could be confusing for fans.
"William Shatner being The Master would be too confusing wouldn’t it? He’s Captain Kirk! It’s already confusing that there are now two Captain Kirks. But if I was considering it I wouldn’t tell you.”
The question is, what do you think? Would. William. Shatner. Make a good. Master? Vote in our poll below and let us know...