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.
Zafar and Adam race against the clock to uncover the latest bomb. As a new ultimatum is issued and Tash mysteriously disapears, the team is forced to deal with the possibility of a mole within their own organisation.
Far-right political party The British Way is threatening democracy so Adam and Fiona go undercover to infiltrate and destroy its campaign.
Adam infiltrates a truck carrying illegal immigrants across Europe in order to stop a would-be terrorist.
A neo-conservative group murder an ex-minister to cover up his past and then they hunt down the journalist who is threatening to blow the story and is under MI5 protection.
MI5 suspect a terrorist is planning an attack from his prison cell. Guest stars Jimi Mistry.
An old British traitor is called in to infiltrate a Russian firm suspected of stealing secrets from GCHQ.
