Director: Toby Haynes Executive producers: Steven Moffat, Piers Wenger, Beth Willis Broadcast: 23 – 30 April 2011
Although effects backgrounds were recorded in New York for Daleks in Manhattan/ Evolution of the Daleks (2007) and establishing shots of San Francisco had appeared in the 1996 TV Movie, Doctor Who had never conducted principal photography in the United States prior to The Impossible Astronaut/Day of the Moon. The collaboration of the BBC America cable and satellite network helped to make this a reality in 2010.