Spooks (series 1)
Kudos Film and Television developed "Spooks" after releasing Channel 4 medical drama "Psychos" in 1999, though the company initially faced friction from television networks which saw no potential in a post-Cold War spy show. The producers later successfully pitched the series to the BBC after the networks' commissioning teams were replaced. Four episodes were being written when the September 11 attacks took place, and the some scenes were rewritten to take the event into account to show the audience "Spooks's" goal of fighting terrorism. Throughout production, the producers were advised by former intelligence officers from the Security Service, KGB and Central Intelligence Agency. Filming took place from November 2001 to March 2002.
Spooks (series 1)
The pilot originally underwent 30 rewrites and four separate story ideas before the BBC was satisfied with it. Similarly, the second episode went through four rewrites. After four episodes were written, the September 11 attacks took place, resulting in three thousand deaths in the United States. As a result, the episodes were rewritten to take account of the events to assure the audience that the show is about fighting terrorism. According to Wolstencroft, the attacks "sidewinded" the show, "perversely made it as relevant as can be," and "commuted a great sense of responsibility" on "Spooks".