Cold War tensions erupt in 1972 as MI5 interrogator Joe Lambe (Tom Hughes) becomes privy to a Soviet operation that has seeded Great Britain with sleeper agents. Tasked by agency head "Daddy" (Brian Cox) to investigate the plot, Lambe and his associates jockey for power amongst themselves, as personal betrayals foment suspicion and Lambe's own complex past is revealed. Stylish British miniseries co-stars Jonathan Aris, Victoria Hamilton. 6 hrs. on two discs. Widescreen (Enhanced); Soundtrack: English.