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.
S07E07 : Episode 7 8.95/10 (115 voting)
Harry is imprisoned and accused by MI5 of being the Russian mole. Lucas disappears to Moscow in a…
S03E10 : Episode 10 8.83/10 (155 voting)
It's Fiona's birthday, and she's not going to forget it!While inspecting a possible Islamic…
S07E08 : Episode 8 8.81/10 (117 voting)
With the Russians launching a nuclear strike on London, the only person who can help the team in…