Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation.
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Episode 6 10x06
Harry is handed over to the CIA, ready for deportation to the US, but events are thrown into turmoil when the team receive detailed knowledge of an attack on the UK.
Episode 5 10x05
Harry kidnaps his CIA counterpart and interrogates him. What Harry discovers alters his suspicions of who is behind the attacks on the Anglo/Russian partnership.
Episode 4 10x04
Two former inmates are released from jail and set to launch an attack in London. Erin and the team must step in at the eleventh hour to prevent massive loss of life.
Episode 3 10x03
MI6 receive word that radioactive material has been detected at an airport, while the home secretary invites Ruth to dinner to discuss a possible new role.
Episode 2 10x02
Top-level secrets are stolen when Calum is mugged outside Thames House. A random robbery or a theft-to-order? Either way there are lethal consequences for the agents.
Episode 1 10x01
Ghosts from the past come back to haunt MI5 chief Harry Pearce, prompting a shocking revelation about his time as a spy during the Cold War.
Episode 8 09x08
The team face their toughest-ever challenge: tracking down Section Chief Lucas North, a man who has nothing left to lose.
Episode 7 09x07
Lucas is plunged further into his past when Vaughn takes manipulation to a new level. Ruth is followed by a council snooper.
Episode 6 09x06
Relations between the CIA and MI5 are stretched after an American drone is hacked in Afghanistan whilst in British care.
Episode 5 09x05
Beth and Dimitri go undercover when the US president visits London to chair top secret peace talks between Israel and Palestine.