All 10 episodes of the second series of the BBC series documenting the missions of MI5 agents. In 'Bosnian', Zoe (Keeley Hawes) goes undercover as a video shop assistant to get close to a Serbian terrorist sympathiser. In 'Mosque', a Birmingham mosque suspected of large-scale fraud turns out to be harbouring a 'nest of angels': a group of young men being trained to sacrifice themselves as suicide bombers. 'Hacker' finds Danny (David Oyelowo) uncovering hackers who have infiltrated the MI5 systems at an IT fair in North London. In 'Bank', the agents are called in to investigate when the Russian mafia try to launder £20 billion through an old English family bank. In 'Germ Warfare', a routine exercise starts to get a bit too realistic for Tom (Matthew MacFadyen)'s liking. 'President' sees the American president in town for a top secret meeting with Libyan government officials. In 'Briefcase', a leading French scientist involved in the development of state-of-the-art weapons technology is found dead. In 'Unions', a celebrated soldier's death in a 'car accident' turns out to have more sinister causes. In 'Drugs', the agents are on the trail of a Columbian drugs cartel with connections in very high places. Finally, 'Christine' sees Tom being set up for the assassination of the head of the armed forces. Can he ever find a way out, and get his friends and colleagues to believe the truth?
