Doctor Who
Christmas Special: The End of Time, Pt. 2
S4 E105:
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."
Starring
Billie Piper, Timothy Dalton, Bernard Cribbins