The 50th anniversary special of Doctor Who is almost upon us and a new trailer for the episode has just been released online.

“Starring the Eleventh Doctor Matt Smith, the Tenth Doctor David Tennant, Companion Jenna Coleman, with Billie Piper and John Hurt.

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.”