Series 5 (2006)

Gas and Oil (Part 1)
8.8

September 17, 2006

The government introduces Draconian emergency measures in response to a series of terrorist attacks. MI5 fears that influential es...Read more

Gas and Oil (Part 2)
9.0

September 17, 2006

MI5 has foiled an attempt to murder the Home Secretary, but the plotters use the new emergency powers to imprison Harry. The team ...Read more

The Cell
9.3

September 18, 2006

Zaf goes deep undercover to infiltrate an Al-Qaeda cell that is planning an attack on the UK. When Adam learns that the terrorists...Read more

World Trade
9.0

September 25, 2006

Posted undercover at the World Trade Summit for Africa, the team discovers an assassination plot. Initially determined to put thei...Read more

The Message
9.3

October 2, 2006

The government publishes its report on the investigation into the death of seven terrorist suspects in a fire at a prison. Harry s...Read more

Hostage Takers (Part 1)
9.3

October 9, 2006

Adam and Zaf try to find a group of terrorists who have infiltrated Britain. Ros oversees a visit by a delegation of Saudi princes...Read more

Hostage Takers (Part 2)
9.3

October 16, 2006

The terrorists start to execute hostages in pursuit of their demand for the release of Al-Qaeda prisoners held in Saudi Arabia, bu...Read more

Agenda
9.5

October 23, 2006

MI5 investigates the assassination of a Muslim cleric outside the high court, and uncovers a radicalised Christian who is determin...Read more

The Criminal
9.5

October 30, 2006

MI5 is put in charge of protecting Niko Grecic, the former right-hand of Tezlia, a Serbian who is put on trial for war crimes. The...Read more

Aftermath
9.5

November 13, 2006

An environmental terrorist group is threatening to flood London if the government does not make a secret document public.