Season pulse
Episodes
6 episodes
Episode 1
As Danny deals with the fallout from the Russian cyber-attack, a bold new threat emerges.
Episode 2
Vadim finds himself working for the Chinese. Danny and Roz clash, and the mole hunt is on.
Episode 3
Barbara faces an impossible decision when her charming ex-boyfriend Nicky Chan re-appears.
Episode 4
A malware attack on British government departments forces Danny and Roz to work together.
Episode 5
Charlie interrogates Barbara, and Danny discovers a clue that turns his life upside down.
Episode 6
Danny puts everything on the line in order to right some wrongs.