Prequel

The Prequels were a series of prologues to certain episodes of Doctor Who, from series six. They were released by the BBC onto their official site. They were similar to the Tardisodes produced for series two.

Prequels

 * The prequel to The Impossible Astronaut.
 * The prequel to The Curse of the Black Spot.
 * The prequel to A Good Man Goes to War.

Behind the Scenes

 * Despite their name, they are technically not prequels. For them to be prequels, they would have had to have been released after the episodes.