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The Doctors embark on their greatest adventure in this anniversary special. All of reality is at stake as the Doctor's dangerous past comes back to haunt him.

The Doctors embark on their greatest adventure in this 50th anniversary special. In 2013, something terrible is awakening in London's National Gallery; in 1562, a murderous plot is afoot in Elizabethan England; and somewhere in space an ancient battle reaches its devastating conclusion. All of reality is at stake as the Doctor's own dangerous past comes back to haunt him.

First shown: 7.50pm 23 Nov 2013
Available for 22 days Duration 77 mins