As David Tennant bids a fond farewell to his pinstripe suit and trainers, The Doctor Who Specials unites the final five thrilling episodes:

The Next Doctor
It's Christmas Eve in 1851 and Cybermen stalk the snow of Victorian London. When the Doctor arrives and starts to investigate a spate of mysterious deaths, he's surprised to meet another Doctor (David Morrissey), and soon the two must combine forces to defeat the ruthless Miss Hartgian (Dervla Kirwan). But are two doctors enough to stop the rise of the CyberKing?

Planet of the Dead
When a London Bus takes a detour to an alien world, the Doctor must join forces with the extraordinary Lady Christina. But the mysterious planet holds terrifying secrets, hidden in the sand. And time is running out, as the deadly Swarm gets closer...

The Waters of Mars
Lindsay Duncan joins the Doctor as he lands on the planet Mars, at a base in peril. A creeping infection beneath the Martial surface threatens not only the human race, but also the Doctor's most fundamental beliefs. Together with Adelaide Brooke - the base's commander - the Doctor must stop a seemingly unstoppable menace before it can reach Earth, and wipe out Mankind.

The End of Time - Part One and Part Two
The Tenth Doctor's final journey. The Doctor's psychotic nemesis the Master has been reborn, on Christmas Eve. With both determined to cheat death, the battle ranges from the wastelands of London to the mysterious Immortality Gene, while the alien Ood warn of an even greater danger approaching, as a terrible shadow falls across the entire Universe. The Doctor faces the end of his life as the Master's plans hurtle out of control. With the sound of drums growing louder, and an ancient trap closing around the Earth, the Doctor and Wilf must fight alone. But sacrifices must be made, and the deadly prophecy warns "He will knock four times".