Remember This

A message on the oldest cliff-face in the universe, a puzzle box opening from the inside and a love that lasts thousands of years…The fates are drawing close around the Tardis – is this the day the Doctor falls?
Quote: "There was a goblin. Or a trickster, or a warrior. A nameless, terrible thing, soaked in the blood of a billion galaxies. The most feared being in all the cosmos. Nothing could stop it, or hold it, or reason with it – one day it would just drop out of the sky and tear down your world."