Watch Order
0 / 6 watchedSix series in broadcast order.
About Line of Duty
Line of Duty follows AC-12 officers Hastings, Arnott and Fleming as they investigate bent police. Series 1 from 2012 covers Tony Gates, series 2 covers Lindsay Denton, and series 3 covers Danny Waldron with the first clear push toward the H mystery.
Series 4 from 2017 covers Roz Huntley, series 5 covers John Corbett’s undercover plot, and series 6 from 2021 closes with Operation Lighthouse and the reveal around H. No seventh series had a date as of September 2026, so the six series form a closed run with room left for a return.
Good to know
Watch straight through with no skipping. Interrogation scenes pay off details planted two series earlier, and the H thread only lands if you carry each suspect forward. Series 6 divides fans on whether the H answer satisfies, so treat it as the planned pause point. A return has been discussed by the BBC but never dated, which keeps the show complete for now.
