P.S. (webcast)

P.S. was a proposed DVD extra that was envisioned as a live action coda to the events of the September 2012 portion of series 7. According to its writer, however, it was cancelled when an actor's availability fell through. Its storyboards were then animated, and narration was commissioned from Arthur Darvill. Ultimately the scene was made public by the BBC as a webcast.

Synopsis
Brian Williams receives an emotional letter from his son.

Plot
The Doctor leaves with Amy and Rory after having dinner with them and Brian. A week later there is a knock at the door and Brian answers it. An American man stands there; he passes Brian a letter and walks in. Brian sits in the lounge and reads the letter revealing it is from his son Rory and that he and Amy had a wonderful life in New York, "fifty years before [Rory] was born," and adopted a son who turns out to be Anthony.

Cast

 * Rory Williams (voice) – Arthur Darvill
 * Also incorporates footage from TV: The Power of Three with Matt Smith, Karen Gillan, Darvill and Mark Williams