His return has been rumoured several times since, but the renegade Time Lord still hasn't returned - and on his Brazil publicity tour, writer Mark Gatiss spoke on the chances of a Master return alongside new Doctor Peter Capaldi.
“I think anything is possible, but with this new Doctor, I think it’s important not to get stuck on old preferences. When I was little, Tom Baker took over as Doctor and had a complete change of monsters. The Zygons and the Krynoids are fantastic. It’s always nice to have new things.”
What do you think of a possible return for the Master? Leave a comment below!
[Source: Doctor Who TV]