A British man gets accused of a crime in Beijing, but he's sure he's been framed.
As tensions rise on-board, Hana is instructed by the Head of MI5 to investigate.
Nolan recounts the events in Beijing, and Hana continues to probe the events on-board.
Jess fears for her life when she becomes a target.
The truth emerges about events on-board forcing Hana to take drastic action.
Hana and Delaney hatch a daring plan to expose the conspiracy.