Meanwhile, McCoy's past comes back to haunt him, as a long-buried secret threatens to destroy his reputation and put the entire investigation at risk.

The final episode sees Arnott and McCoy facing off against their corrupt colleagues and the true puppet masters behind the corruption. They uncover a shocking web of deceit that reaches all the way to the top of the PSNI and beyond.

Meanwhile, we're introduced to Detective Inspector Jack McCoy (played by Michael Mando), a tough, seasoned officer with a complicated past. McCoy is initially resistant to Arnott's probing, but as the investigation unfolds, it becomes clear that he may be more involved than he lets on.

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Meanwhile, McCoy's past comes back to haunt him, as a long-buried secret threatens to destroy his reputation and put the entire investigation at risk.

The final episode sees Arnott and McCoy facing off against their corrupt colleagues and the true puppet masters behind the corruption. They uncover a shocking web of deceit that reaches all the way to the top of the PSNI and beyond. line of duty s01 download

Meanwhile, we're introduced to Detective Inspector Jack McCoy (played by Michael Mando), a tough, seasoned officer with a complicated past. McCoy is initially resistant to Arnott's probing, but as the investigation unfolds, it becomes clear that he may be more involved than he lets on. Meanwhile, McCoy's past comes back to haunt him,