The series six finale of the hugely popular BBC drama airs this Sunday at 9pm
Some 12 million viewers are expected to tune into Jed Mercurio s police crime thriller - with the promise of H finally being unmasked
On social media, people have admitted the show airing tonight - in a 90-minute special - is the highlight of their bank holiday weekend
Line Of Duty: Millions set to tune in for finale - but will H finally be unmasked? originalfm.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from originalfm.com Daily Mail and Mail on Sunday newspapers.
It s the show that has gripped the nation, with 10.9 million viewers tuning in for last week s episode ahead of Sunday s finale.
Yet Line Of Duty star Martin Compston - who plays DI Steve Arnott - has revealed the BBC drama could be coming to an end sooner than everyone thinks.
Martin - who previously revealed that executive decisions about the series are above his pay grade - cast doubt on the show s future during an appearance on The Jonathan Ross Show.
Coming to an end? It s the show that has gripped the nation, yet Line Of Duty star Martin Compston has revealed the drama could be coming to an end sooner than everyone thinks