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.
2010-09-20
2010-09-27
2010-10-04
2010-10-11
2010-10-18
2010-10-25
2010-11-01
2010-11-08
