The Twelfth Episode of the fourth series of British science fiction television series Doctor Who. It will be broadcast on BBC One on June 28th, 2008 . This episode will follow the episode from the week before Turn Left which saw the prominante return of doctor whos most valued sidekick Rose Tyler.In the last episode of doctor who we did not see much of David Tennant (The Doctor) and saw more Catherine Tate (Donna Noble).However this was because filming of the tenth episode midnight was also filmed at the same time as the eleventh episode Turn Left.But in this episode also including Billie Piper (Rose Tyler) Catherine and David share an equal part in the story.