By Any Means: Season 1, Episode 5

1 - 5:

As an organised drug deal takes place, Ahmed Demir shoots and kills innocent onlooker Arthur Rose. He then ends up being given the option by MI5 chief Charles Napier of informing on his terrorist connections in exchange for his freedom. Helen is worried that this enables Ahmed to evade justice for Arthur Rose’s murder and she calls in Jack and the team in to make sure that justice is served.