TIME Lord David Tennant tries to fend off an evil Cyberman with a sword in the Doctor Who special on Christmas Day.
The confrontation comes as the Doctor and a fellow Time Lord, played by David Morrissey, 44, join forces to battle the Cyber King in an episode set in 1851 in the BBC1 treat.
Shooting begins next month on four specials, the last in which David plays the hero. His replacement has not been announced.
Last week David, 37, pulled out of his stage role as Hamlet due to a back injury, although he is expected to be well enough to film.
But writer Russell T Davies added: “We’ll have to be very careful with him. I don’t think he will be swinging on a wire on the first day.”