15 • Drama, Action & Adventure, Crime •

It's a fine line between safety and terror. Meet the rulers.

76.8% User Score

Overview

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.

Cast

Media

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