Twenty high-explosive devices are smuggled into England. When the first goes off killing a doctor and severely injuring her young daughter, the team scrambles to track do ...

Racial tensions in Britain continue to rise and the team pieces together an organized attempt to stir up problems for political gain. Tom and Helen go undercover to get c ...

Zoe is undercover on a routine op, pretending to be a PR agent hoping to land a contract with the Turkish government. She winds up a hostage - along with dozens of others ...

During riots in advance of US President Bush's visit to London, the MI-5 team observe Peter Salter among the agitators. Salter is a legendary agent and neither Zoe or Dan ...

A former MP, imprisoned years before in an arms-dealing scandal, claims to have a damaging memoir ready to go to press. The team tries to determine whether its claims are ...

SPOILERS Patrick McCann, the leader of an Irish splinter group walks into a safe house and insists that he has crucial information for MI5 concerning their investigation ...