16-th episode of 4-th season "Doctor Who"

What "Doctor Who" 16-th episode about

Facing his mortality, the Doctor returns to Earth find the planet's population haunted by horrific nightmares all their own. Reuniting with Wilf, The Doctor investigates a lingering mystery that threatens to unravel the planet as an old enemy prepares to be reborn.

Episode number: 16

Episode name: "The End of Time (1)"

Episode release date: 25 december 2009 at 18:00

Status: aired