Series 4
200510 episodes
8.8
The group are still reeling after the shocking events at the end of the last series. Now rising star Zafar joins the team as they set out to become even stronger in their battle to safeguard the nation. When London comes under terrorist attack Adam is forced to make an impossible decision, Harry must deal with blackmail threats from an old flame, and Fiona faces her own demons when she goes undercover in Syria.
All Episodes
Episode 1
The Special (1)
8.8
September 12, 2005
When a devastating bomb explodes in central London, causing multiple deaths, a terrorist group with a hatred for human life claim responsibility. With their leader facing extradition, the bombers announce that crippling attacks will be launched at ten hour intervals until he is released.
Episode 2
The Special (2)
9
