E1 • The Special: Part 1

1. 56 min
2. TV-14
3. CC

A terrorist bomb devastates London. Can MI5 catch the perpetrators before another strike?

E2 • The Special: Part 2

1. 58 min
2. TV-14
3. CC

As the hunt for the bomb maker continues, Adam races to save the life of one of his team.

E3 • Divided They Fall

1. 58 min
2. TV-14
3. CC

Adam goes undercover to destroy a far right political party from within.

E4 • Road Trip

1. 58 min
2. TV-14
3. CC

MI5 discover that an Islamic terrorist is planning to enter the UK and launch an attack.

E5 • The Book

1. 57 min
2. TV-14
3. CC

Harry discovers an ex-MI5 officer's suicide was staged and vows to avenge his murder.

E6 • The Innocent

1. 57 min
2. TV-14
3. CC

A suspect planning a terror attack from prison is released to lead MI5 to other plotters.

E7 • Syria

1. 58 min
2. TV-14
3. CC

Adam and Fiona's marriage is tested when she insists on going undercover.

E8 • The Russian

1. 58 min
2. TV-14
3. CC

The team investigate a Soviet investor who the government see as the saviour of the NHS.

E9 • The Sting

1. 57 min
2. TV-14
3. CC

Harry's stand against the CIA's extradition policy on British Muslims gets him sacked.

E10 • Diana

1. 59 min
2. TV-14
3. CC

A legendary ex-spy pays a visit to Thames House with a bomb and holds the team to ransom.