Just as the British launch a peace process meant to stabilize its relations with Iran, MI-5 learn that a rogue Iranian intelligence officer, Megan Asnik , may be plotting ...

With the virus spreading, Harry Pearce decides to take extraordinary action to find out who might have an antidote. They determine that one of four countries likely has i ...

The crash of a cargo airplane near a secret US army base diverts MI-5's attention from the Iran situation. The Ministry of Defense has put out press releases saying it wa ...

Abdul Kharami is a suspected terrorist who is under constant surveillance but manages to evade his watchers just as MI-5 receives reliable information that he may be read ...

MI-5 has Sergei Valentino, a freelance Russian, under observation from the moment he enters Britain. He has in his possession blueprints for a nuclear trigger which they ...

Adam and Ros board an airplane to identify a courier carrying nuclear weapons technology to Iran. Jo and Malcolm race to prevent the poisoning of London's water supply wh ...

Knowing that Iran now has the nuclear triggers to complete their armament program, Harry Pearce convinces his CIA counterpart Bob Hogan that the time has come to seriousl ...

Ros's relationship with Yalta is revealed. With limited options, she turns herself in, but convinces Harry that his best option is to send her back out as a double agent. ...

After Yalta's attack on their satellite network, America is planning air-strikes on Iranian nuclear facilities. Harry's team are suspended from the Grid following the Ros ...

War with Iran finally averted, the team learn that a London school will be the target of hardliners resisting the new peace. Simultaneously they discover that their lost ...