Popsugar Entertainment Line Of Duty Line of Duty Season 5 Details AC-12 Is Back! Here's Everything We Know So Far About Line of Duty Season 5 19 March 2019 by Elle Taylor View On One Page Photo 5 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 The Trailer . . . the minute-long trailer dropped on March 3, giving us more insight into what to expect. Previous Next Start Slideshow Line Of DutyBBCTV