Line of Duty Season 6

Overview

The final season centers on the investigation of a murder — and a question that cuts to the heart of the series: is DCI Joanne Davidson, played by Kelly Macdonald, corrupt? Line of Duty has always been a show about paperwork as warfare — interviews, timelines, and the slow grind of proving what happened — and the final season leans into that: the case against Davidson built document by document, lie by lie. Tense and suspenseful, it follows the investigation as it closes in on Davidson, testing loyalties and forcing the team to ask how far corruption really goes. The finale is a powerful, moving and fitting ending — the kind that has to answer six seasons of questions about who can be trusted, and does it without flinching.

Cast

Martin Compston

Vicky McClure

Adrian Dunbar

Keeley Hawes