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It's a fine line between safety and terror. Meet the rulers.
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.
US availability from JustWatch
Season 1
6 episodes · 2002
Season 2
10 episodes · 2003
Season 3
10 episodes · 2004
Season 4
10 episodes · 2005
Season 5
10 episodes · 2006
Season 6
10 episodes · 2007
Season 7
8 episodes · 2008
Season 8
8 episodes · 2009
Season 9
8 episodes · 2010
Season 10
6 episodes · 2011
Show details from TMDB. This product uses the TMDB API but is not endorsed or certified by TMDB.
