Spoiler alert: this blog is for people watching series five of Line of Duty (it also contains spoilers from earlier series). Don’t read on unless you have watched episode four.
Hold on to your seatbelts everyone! This was what we’ve been building up to. A tense hour, involving a punishment beating, hints that this fifth series is nothing to do with the mysterious H and everything to do with Hastings’s past in Northern Ireland, as well as growing distrust among both our AC-12 heroes and the Ocg, culminating in the shocking death of DS John Corbett (Stephen Graham). I know Daniel Mays’ brief time on this show underlined that no antagonist is safe, but I was convinced the charismatic Corbett would make it through to the end.