Sep 20, 2014 Updated: 10:11 PM
A modern, edgy drama full to the brim with passion, politics and peril. MI-5 leads us into the dangerous world of Britain's top-secret security agency, and into the lives of people who must lie, and sometimes die, for a living.
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Conclusion. Just when Martin thinks things can't get any worse, he's taken hostage by a paranoid villager.
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