Original version

BBC Northern Ireland region started on 19th April 1955 as part of the BBC Television Service, before becoming BBC One Northern Ireland.

BBC One Northern Ireland

Line of Duty

Drama: Crime

A drama about the investigations of AC-12, a controversial police anticorruption unit.

Bent coppers and the detectives sent to stop them. AC-12 isn't here to make friends. Will their investigations land them deadly enemies?

Series 4

BBC Four

Simulcast of network BBC One in high definition. From 03/11/2010

BBC One HD

The BBC West region started on 1st September 1957 as part of the BBC Television Service, before becoming BBC One West.

BBC One West

Simulcast of BBC One Scotland in high definition. From 14/01/2013

BBC One Scotland HD

Simulcast of BBC One Northern Ireland in high definition. From 24/10/2012

BBC One Northern Ireland HD

The BBC South West region started on 20th April 1961 as part of the BBC Television Service, before becoming BBC One South West.

BBC One South West

Simulcast of BBC One Wales in high definition. From 29/01/2013

BBC One Wales HD

The BBC South region started on 5th January 1961 as part of the BBC Television Service, before becoming BBC One South.

BBC One South

BBC One London

London

BBC One West Midlands

BBC One region covering Derbyshire, Leicestershire and Nottinghamshire.

BBC One East Midlands

The BBC East region started on 1st May 1959 as part of the BBC Television Service, before becoming BBC One East.

BBC One East

BBC One North West

The BBC North East & Cumbria region started in 1959 (tbc) as part of the BBC Television Service, before becoming BBC One North East & Cumbria.

BBC One North East & Cumbria

BBC One Yorkshire

BBC One Oxfordshire

Formerly part of a wider BBC One South East region that included London and part of the South region. Separated from BBC One London 2001-09-03 following reorganisation of the South East region.

BBC One South East

BBC One Cambridgeshire

BBC One Channel Islands

BBC One Yorks & Lincs

BBC One Scotland

Scotland

BBC One Wales

Wales

BBC Four HD

Thandiwe Newton

Martin Compston

Vicky McClure

Adrian Dunbar

Lee Ingleby

Paul Higgins

Maya Sondhi

Gaite Jansen

Mark Stobbart

Claudia Jessie

Nigel Boyle

Vineeta Rishi

Anneika Rose

Scott Reid

Henry Miller

Lucie Shorthouse

Asha Kingsley

Royce Pierreson

Elva Trill

Cait Collins

John Strickland

Jed Mercurio

World Productions Limited

Line of Duty: Series 4: Episode 3

line-of-duty_090417_s4_ep3_pp.jpg

Episode 3

BBC One - Line of Duty, Series 4, Episode 3

AC-12 wrestle with the new forensic evidence.

Police drama series. AC-12 wrestle with the new forensic evidence. Meanwhile, Steve challenges Roz's husband Nick to vouch for his wife.

As AC-12 wrestle with the new forensic evidence casting doubt over Tim Ifield, Kate is approached by another woman claiming to have been assaulted by Michael Farmer. While Steve fumes over this contradictory testimony, Kate uses her newfound respect to inveigle herself with the Trapdoor team.

Meanwhile, Steve challenges Roz's husband Nick to vouch for his wife's whereabouts on the night Tim Ifield went missing. With Nick proving evasive, Steve senses a whole new angle on the investigation.

Line of Duty: Series 4

BBC One

Police drama about the investigations of anticorruption unit AC-12.

Police drama about the investigations of anticorruption unit AC-12. When DCI Roz Huntley captures a serial killer, the chief forensic investigator alerts AC-12 to a possible miscarriage of justice.

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