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Historical Record
At the turn of 2010, Earth enters one of the most unstable periods in its recorded history. The warning comes first from the Ood, who identify the return of the Master as the sign that the end of time is approaching. Their warning proves accurate. A small cult on Earth succeeds in bringing the Master back to life, but the resurrection is damaged and incomplete. He returns with extraordinary speed and strength, yet also with a violent physical instability that leaves him constantly hungry and increasingly dangerous. The Doctor traces these developments while trying to understand an older prophecy tied to four knocks, a warning he believes points toward his own death.
The crisis expands when the Master is drawn into the orbit of Joshua Naismith, a wealthy industrial figure who possesses alien technology known as the Immortality Gate. Naismith wants the device repaired and controlled, but the Master sees a far larger opportunity. Inside Naismith's mansion, the Gate is used to rewrite the human species on a global scale. In a single wave, nearly every person on Earth is transformed into a copy of the Master. Public life, government, transport, and every national chain of command are effectively overwritten at once. The event is not an invasion in the ordinary sense. It is a universal replacement carried out through one machine and one mind, leaving only a handful of people unchanged. Wilfred Mott survives by sheltering in a protected chamber, while Donna Noble remains biologically exempt because of earlier changes to her body and memory.
The Doctor learns that the drumbeat in the Master's head is not a random madness but a signal planted long ago by the Time Lords during the final days of the Time War. That signal becomes the bridge they need. Through the Master and the diamond like link sent to Earth, Gallifrey begins to emerge from the Time Lock and take position above the planet. Lord President Rassilon now enters the historical record directly. His plan is not rescue in any humane sense. Gallifrey's return is tied to a wider design that would elevate the Time Lords while destroying the rest of creation. Earth is reduced to a staging ground for a cosmic escape attempt. The Doctor stands in the middle of three linked catastrophes at once, the Master race, the return of Gallifrey, and the possible destruction of time itself.
The resolution comes through refusal rather than conquest. The Doctor rejects the pressure to kill out of rage, breaks the chain of events that allows Gallifrey to remain, and restores humanity. The Master turns against Rassilon and helps sever the link, sending Gallifrey back into the Time Lock and ending the immediate threat to Earth. Yet the crisis still demands a personal price. Soon after the larger disaster is prevented, the Doctor enters a radiation flooded chamber to release Wilfred Mott, absorbing a lethal dose himself. In public historical terms, 1 January 2010 becomes the best single date for the end of the Tenth Doctor's era. It is the day when Earth survives a complete identity overwrite, Gallifrey almost returns to the sky above it, and the Doctor's tenth life reaches its final chapter.
Key details
Date: 1 January 2010, approximate anchor for a two part event spanning late December 2009 to early January 2010
Location: Earth, primarily London and the Naismith mansion
Source: Doctor Who: The End of Time (2010)
Significance: This event ends the Tenth Doctor's era, brings the Master and the Time Lords into the same crisis, and leads directly to the Doctor's regeneration.
Related events
FAQ
Q: When does The End of Time take place in Doctor Who?
The story is broadcast across 25 December 2009 and 1 January 2010, and the internal crisis spans that same period. For timeline purposes, this page uses 1 January 2010 because that is when the main climax and the Tenth Doctor's final sacrifice occur.
Q: What makes The End of Time such a major event?
Earth is nearly rewritten into copies of the Master, and Gallifrey almost returns from the Time War above the planet. The event matters because it combines a global human crisis with one of the biggest Time Lord emergencies in the series.