the final part of the original 8-part story..'will the Doctor Puppet find his former selves?
The Doctor finds himself in a strange,monochromatic place,as he approaches his end… and his beginning.
the Doctor makes a mistake but finds himself in a familiar setting.
the Doctor follows a clue and finds something nice.
the Doctor finds a familiar enemy in a strange place.
The Doctor travels into his own past to make sure it's still safe.
The Doctor discovers that the mystery of the letter is much bigger than he imagined, and might involve some unexpected characters.