Sep 18, 2014 Updated: 5:55 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.
VISIT THE BBC's MI-5 WEB SITE
A British-Iranian citizen (Philip Arditti) plans an act of terrorism that could start a war with Iran. Alex Roscoe: William Armstrong. Pollard: Peter Vollebregt. Dixon: Ged Simmons.
Find out about upcoming shows, special events, and discounts.