Drama series set in 2013. After London has been evacuated following a nuclear bomb and the country's power base has shifted north, six new MI5 recruits take up the challenge of gathering intelligence in the fightback.

Jez and Kylie are sent in undercover to investigate a housing estate which has become a criminal hot-spot and source of fake radiation drugs. The killing of a police officer on the estate complicates matters, putting the pair in grave danger. Charlie and Rachel discover further clues in the investigation of Hannah's death and MI5 corruption. Show less