The Book: A neo-conservative group murder an ex-minister to cover up his past and then they hunt down the journalist who is threatening to blow the story and is under MI5 protection.
Regular Cast: Peter Firth (Harry Pearce), Rupert Penry-Jones (Adam Carter), Nicola Walker (Ruth Evershed), Anna Chancellor (Juliet Shaw), Raza Jaffrey (Zafar Younis), Hugh Simon (Malcolm Wynn-Jones)
Guest Cast: Rory Macgregor (Colin Wells), Debra Gillett (Debra Langham), Miranda Raison (Jo Portman), Olga Sosnovska (Fiona Carter), Andrew Burt, Simon Lenagan, Douglas Hodge, Stanley Townsend
Writer: Raymond Khoury / Director: Jeremy Lovering
Airdate: 6 Oct 2005 on BBC One
Series: Spooks Season 4 Episode 5
Show Info: The cases of a group of MI5 officers based at the service’s Thames House headquarters, in a highly secure suite of offices known as The Grid.