Episode One: The Last Post
An al Qaeda cell kidnaps a British soldier and demands that Remembrance Sunday be cancelled as it is an affront to all dead Muslim soldiers. MI5 hunts the cell but when the team secures the release of former MI5 officer Lucas North in a secret spy swap, they realise al Qaeda has a new sponsor – the emerging superpower Russia, and there’s a bomb…
Episode Two: Revenge Is Best Served Cold
Lucas’s loyalties are secretly no longer with MI5 and he exploits Harry’s trust to help a Russian submarine destroy Britain’s communications system and cause financial and social chaos. And Lucas has one further trick to play…Episode Three: Secrets and Lies
With Lucas back within MI5, he reveals that the Russians interrogated him about Operation Sugar Horse, the most secret ongoing spy operation MI5 ever had. If the Russians know about it, then MI5 has a very high-level mole. Harry seeks out his mentor, The Spycatcher, to help him find the mole. Meanwhile, Ben is undercover with an al Qaeda cell which is planning to bomb London, and what looks like a dry run unexpectedly turns live…Episode Four: Supping With The Devil
The team is stunned to discover that al Qaeda’s number three wants to negotiate. It’s a risk, but Harry and the team have to take this chance for peace. Meanwhile, Lucas’s double-agent status is tested by the Russians. Can he and the team keep up the bluff whilst Harry continues to hunt the real Russian traitor?Episode Five: Wicked Game
The British economy is on the brink of collapse; if one more bank goes down, the entire financial system will implode. Ros goes undercover in the City to flush out a dangerous international financier who wants to bankrupt Britain. Suddenly, it’s not just the economy, but Ros’s life that is at risk…Episode Six: The Witness
A teenage boy accidentally stumbles upon a Government conspiracy and is instantly absorbed into the world of MI5, ending up on the run. Lucas and the team battle to protect the boy from those who wish to silence him. Harry, meanwhile, receives a cryptic message from his asset in Russia – could this be the key to bringing down the high-level MI5 mole?Episode Seven: Darkest Hour
Harry is imprisoned and accused by MI5 of being the Russian mole. Lucas disappears to Moscow in a bid to gather intelligence and get to the bottom of Harry’s arrest, whilst the rest of the team tries to prove his innocence on the Grid. But with so much evidence against him, and a traitor amidst the team, things are not looking good. Is this the end for Harry Pearce?Episode Eight: Rain From Heaven
The Russians are launching a nuclear strike on London. The only person who can help the team at this desperate hour is the traitor amongst them. With the Russians hunting them down, the team usher their traitor through London in a desperate bid to reach the codes and the bomb in time.
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