Season 2, Episode 2:
An MI-5 agent is idenfitied and tortured inside a Birmingham mosque, where the Mullah is suspected of extremist activities. Before his health deteriorates, the agent tells Tom that boys are being trained there as suicide bombers. The team urgently needs to put someone else inside the mosque, but there is no one suitable. Enter Algerian spy Ibuhn Khaldun, who is in the UK and desperate for a British passport. MI-5 is keen to recruit his services, but can he be trusted?
Missed this episode? Need some Cliffs Notes? Read our recap here.