Line Of Duty

When a seized drugs transport convoy is hijacked by an Organised Crime group, headed by ruthless John Corbett, AC-12 are called in to investigate - and uncover a shocking secret.

DI Kate Fleming and DS Steve Arnott attempt to track down the undercover officer embedded in the Organised Crime Group, which puts Steve in danger.

Corbett’s plan requires McQueen to exploit links with crooked police officers, while AC-12’s alarming discovery reveals the scale of corruption, including the figure known as ‘H’.

Tensions mount between Corbett and McQueen. Elsewhere, Hastings’ erratic behaviour causes Kate and Steve to question his motives..

As the hunt for ‘H’ intensifies, Kate and Steve investigate Corbett’s past and uncover some evidence which may explain Hastings’ reckless behaviour. Is he guarding a dark secret?

In a nail-biting 90-minute finale, Kate and Steve find themselves torn between loyalty to Hastings and their duty to uncover the truth. Will the identity of ‘H’ finally be revealed?