John Simm will return as the Master in the two special episodes which bring David Tennant's era as the Doctor to a stunning conclusion. There's been speculation about Simm's involvement with the show but we can confirm he'll be back later this year, once again playing the Doctor's deadly nemesis.
Simm first appeared as the Master in Utopia, The Sound of Drums and The Last of the Time Lords. All three episodes were written by Executive Producer and Head Writer Russell T Davies who also wrote his upcoming adventure.
The character debuted in 1971 and on-screen has faced all but the Second and Ninth Doctors. Davies' version of the Master saw him retain his wit and cunning but since Utopia he's been callous and charismatic, sick, psychotic and enormously likeable. In short, everyone's favourite megalomaniac.
At the close of Series Three we saw the Master gunned down by his wife and whilst lying in his enemy's arms, he refused to regenerate. The world believed he had died and the Doctor accepted he was the last of the Time Lords. But this is Doctor Who and you can't keep a good bad guy down!
We've yet to find out how he survived but we can promise we'll be bringing you an exclusive interview with John Simm and some brand new Master material later this year. Stay tuned!
If anyone wants to remain in the dark about the two specials which form the Tenth Doctor's finale, please look away now! Footage from the first of these episodes was screened during the Doctor Who panel at Comic-Con International, 2009, meaning details about the adventure are officially out there!
As we revealed earlier today, the episodes feature the return of John Simm as the Master. The Doctor's fellow Time Lord is sporting a different hair colour in the finale, working a striking, lighter look.
And the Master isn't the only familiar figure returning from Doctor Who's recent past. Executive Producer Russell T Davies, who wrote David Tennant's final episodes, confirmed that Alexandra Moen is back as Lucy Saxon, the character we previously saw in The Sound of Drums and The Last of the Time Lords. Although married to the Master she put a serious dent in their relationship by shooting him but what happened to her after the events of Series Three has remained a mystery, so far...
Russell further explained that footage from the finale screened at Comic-Con included the voice of Timothy Dalton as the Narrator. His exact role in the specials is currently undisclosed but Dalton is, of course, best known for portraying James Bond in The Living Daylights and Licence to Kill.
One of the biggest cheers of the Doctor Who panel occurred when the trailer showed the face of Catherine Tate, last seen playing Donna Noble in Journey's End. Bernard Cribbins, who played her grandfather, Wilf, also features in the trailer which depicts a grim-faced Doctor walking