Look forward to: Line of Duty S4, Sunday March 26 on BBC One

DS Steve Arnott (Martin Compston), Superintendent Ted Hastings (Adrian Dunbar) and DS Kate Fleming (Vicky McClure) return in Line of Duty series four

IT'S time to set those 'series links' on your digital television viewing device of choice, because Line of Duty is coming back to our screens.

Few weekly dramas are as well written and executed as Line of Duty, the 'must watch' police corruption-themed show which has managed the rare feat of actually improving with each series.

As an added bonus, it's filmed here in Belfast (playing an un-named English city) – a real boon for those of us who aren't fans of Game of Thrones – meaning locals get to play 'spot the landmark' and chuckle at the wonky geography on display during car chases in the way those living in LA, London and New York have done for years.

Promoted to BBC One for its fourth series, this time around the Jed Mercurio created and written show finds DS Steve Arnott (Martin Compston), DS Kate Fleming (Vicky McClure) and Superintendent Ted Hastings (Adrian Dunbar) at anti-police corruption unit AC-12 investigating whether DCI Roz Huntley (Thandie Newton) has sent down the wrong man for series of grizzly murders.

Can Line of Duty recover after the shocking departures of victimised DC Lindsay Denton (Keeley Hawes) and devious DI Matthew 'Dot' Cottan (Craig Parkinson) last year?

On previous ratings-conquering form, you wouldn't want to bet against it.

:: Catch up on series three now via, read our interviews with the Line of Duty cast and crew in next week's Scene

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