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 f