Series seven sees officer Lucas North joining MI5. Having spent the past eight years in a Russian prison, Lucas North is welcomed back by MI5 supremo and old friend Harry Pearce, who was instrumental in finally securing his release.

Season 6 Episode 1 - The Virus: Part 1

Zaf and Adam participate in a mission in Tehran that goes wrong. As the investigation advances, the team realizes they've been lied to as to the goals of their mission. Air Date : 16th-Oct-2007

Season 6 Episode 1 - The Virus: Part 1

Zaf and Adam participate in a mission in Tehran that goes wrong. As the investigation advances, the team realizes they've been lied to as to the goals of their mission. Air Date : 16th-Oct-2007  Read More

Season 6 Episode 2 - The Virus: Part 2

The country faces a plague outbreak. In a race against time, the officers from Section D have to track down and quarantine everyone who might be infected, while preventing a panic. Air Date : 16th-Oct-2007  Read More

Season 6 Episode 3 - The Kidnap

A British plane is thought to have been hijacked and taken to an American airstrip. Ros is captured by the Yalta organisation when the team shows up and they learn of an international cover-up. Air Date : 23rd-Oct-2007  Read More

Season 6 Episode 4 - The Extremist

As an Algerian extremist escapes his home detention, the team fears he may be plotting a terror attack on US businesses in the UK with the help of local Iranians. However, working with the Americans to stop the attack proves a trying task given their recently-deceitful behaviour. Air Date : 30th-Oct-2007  Read More

Season 6 Episode 5 - The Deal

MI5 has to intercept a Russian arms dealer who plans to pass blueprints for a nuclear device to Iran. Adam and Ana decide to bring their relationship to a close. Air Date : 6th-Nov-2007  Read More

Season 6 Episode 6 - The Courier

Harry discovers there's a mole at large in the Grid. Meanwhile, Ros and Adam board a plane undercover in an attempt to stop Iran becoming a nuclear power. Air Date : 13th-Nov-2007  Read More

Season 6 Episode 7 - The Broadcast

A live TV broadcast announcing the new peace accord between the UK, US and Iran is hijacked by armed gunmen. Can Adam and Ros defuse the situation before someone's hurt? Air Date : 20th-Nov-2007  Read More

Season 6 Episode 8 - Infiltration

Ros is in grave danger after Bob Hogan discovers she's a traitor. Meanwhile, Harry's brought before Yalta's chief, whose identity shocks him to the core. Air Date : 27th-Nov-2007  Read More

Season 6 Episode 9 - Isolated

The team finds themselves suspended from the Grid following what happened involving Ros. Harry learns from an old adversary about a bomb he has planted in London. The team realizes that if they respond their lives will be in danger but if they don't it will be the public who suffers. A shocking discovery is made when they discover who is behind the latest threat. Air Date : 4th-Dec-2007  Read More

Season 6 Episode 10 - The School

Hardliners opposed to the peace between Iran and the West have targeted a London school. Jo is captured by Redbacks, the mercenaries who abducted Zaf. Air Date : 18th-Dec-2007  Read More