Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work 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.
Where to watch
-
Amazon Prime Video
-
Peacock Premium
-
Philo
-
Britbox
-
Peacock Premium Plus
-
Fawesome
-
The Roku Channel
-
Pluto TV
-
Amazon Prime Video Free
-
Tubi TV
-
Amazon Video
see all options Availability data: JustWatch
- Seasons
- 10
- Episodes aired
- 86
- Latest aired
- S10E06
- Total runtime
- 1d 12h
Timeline when each season aired
- Season 1 May 2002 – June 2002 6 episodes
- Season 2 June 2003 – August 2003 10 episodes
- Season 3 October 2004 – December 2004 10 episodes
- Season 4 September 2005 – November 2005 10 episodes
- Season 5 September 2006 – November 2006 10 episodes
- Season 6 October 2007 – December 2007 10 episodes
- Season 7 October 2008 – December 2008 8 episodes
- Season 8 November 2009 – December 2009 8 episodes
- Season 9 September 2010 – November 2010 8 episodes
- Season 10 September 2011 – October 2011 6 episodes
-
S01E01 Thou Shalt Not Kill
May 13 · 50min find the promo
Show synopsis
An abortion doctor is executed by an American pro-life terrorist; Mary Kane. An informant reveals that this is just the tip of the iceberg as Mary has 20 more bombs and plans on using them. To make matters worse she has started training more pro-life groups, within the UK.
-
S01E02 Looking After Our Own
May 20 · 52min find the promo
Show synopsis
Tom and Helen must go undercover and befriend the wife of a suspected hardcore racist in order to prevent a racewar. Meanwhile Zoe and Tessa learn that a boatload of refugees is due to dock at Dover in the next few days. Things worsen when the operatives realise the two things may be connected and their covers may be blown.
-
S01E03 One Last Dance
May 27 · 51min find the promo
Show synopsis
Whilst on a routine check of the bugs in the Turkish Embassy, Zoe and all the other people in the embassy are taken hostage by terrorists who wish to negotiate the release of their parents from prison. If Zoe's cover as a PR consultant is blown she will almost certainly be killed. Things worsen when Harry realises that the attack on the embassy was all just a distraction from something much, much bigger.
-
S01E04 Traitor's Gate
June 4 · 52min find the promo
Show synopsis
MI5's best officer, Peter Salter, seems to be joining the enemy. President Bush is scheduled to visit and it seems as though Salter is trying to stop the peace, is this all part of his mission or is he in fact a triple-agent?
-
S01E05 The Rose Bed Memoirs
June 10 · 51min find the promo
Show synopsis
Disgraced MP Hampton Wilder has written memoirs with the power to destroy the government, what's more an old KGB agent is trying to smuggle illegal arms into and out of the country, besmirching the good name of the Prime Minister's right hand man.
-
S01E06 The Lesser of Two Evils
June 17 · 51min find the promo
Show synopsis
Patrick McCann, an IRA leader claims to have information about a nuclear attack on the UK mainland, can MI5 trust the IRA enough to give them what they want in return; 36 hours free of surveillance, free to do whatever they wish?