Lucas goes undercover aboard a merchant ship on which a known member of Al Qaeda is traveling to the UK. The ship is soon taken over by terrorists and it becomes clear that they are planning a coordinated attack of some sort. Lucas isn't the only MI-5 agent on board but Lucas' main help in the operation comes from a private security officer, Beth Bailey. Back in London, Harry Pierce has a particularly difficult encounter with the former Home Secretary, Nicholas Blake. Harry decides that it's time to retire but is again faced with making life and death decisions.
Did You Know?
This episode marks the first appearance of two new characters. Beth Bailey fills the gap left by Ros Myers, whose death at the end of the previous season is referenced in the opening minutes (and leads to her second funeral, the first - several years earlier - having been a fake). Dimitri Levendis brings the field spies back to three, with Tariq and Ruth working primarily from the Grid. See more
An al-Qaeda hijacker greets another using the Hebrew greeting "shalom". See more
This is my "I want some good news" face.