An exclusive prequel to the Season 6.2 premier "Let's Kill Hitler" will be available starting Monday, August 15.

There have been three previous prequels this season, for the episodes "The Impossible Astronaut", "The Curse of the Black Spot", and "A Good Man Goes to War".

This one is said to be "something different" from previous prequels. It will bridge the gap between Episodes 7 and 8, and reveal a little of what the Doctor and Amy are feeling after the dramatic events of "A Good Man Goes to War".