Next Episode of Line of Duty is
Season 4 / Episode 1 and airs on 26 March 2017 20:00
A drama about the investigations of AC-12, a controversial Police Anti-Corruption Unit.
Undeterred by recent events, DS Steve Arnott continues to find crucial evidence in the Danny Waldron case, and when his theory is confirmed he vows to get justice. DC Kate Fleming discovers that PC Hari Bains is making secret calls to an unregistered phone number while having clandestine meetings with his colleague PC Jackie Brickford. With AC-12's suspicions raised, Steve acts fast - but it is DI Dot Cottan's actions that garner praise.
Fresh testimony launches AC-12 back on the trail of the Caddy, a corrupt officer with links to organized crime. But new disturbing evidence suggests the Caddy may reside within AC-12.
Following new evidence obtained by DC Kate Fleming, the former Head of Vice Patrick Fairbank is questioned by AC-12, but despite Kate's best she is left frustrated. Worried by Arnott's contact with Lindsay Denton, DI Dot Cottan takes matters into his own hands, with shattering consequences. Under pressure from AC-12 legal counsel Gill Biggeloe, Ted Hastings has no choice but to make a dramatic and heartbreaking decision.
DS Steve Arnott is arrested on suspicion of murder but continues to protest his innocence. Does DC Kate Fleming's undercover operation hold the key to Steve's guilt and the identity of the Caddy? AC-12 legal counsel Gill Biggeloe pressurises Superintendent Ted Hastings but some new evidence leaves the enquiry turning on its head.
Following in the footsteps of Gates, Denton, and Waldron, Huntley finds herself at the centre of an AC-12 investigation following a mishap during a career defining investigation.
A dismembered body is discovered, and worries grow when Roz fails to report for duty.
After further questioning of Michael Farmer unearths crucial new information, AC-12 challenge the case against him.
Meanwhile Arnott and Fleming continue to clash.
Paul Higgins(CS Derek Hilton)
Lennie James(DCI Tony Gates)
Gina McKee(Jackie Laverty)
Daniel Mays(Sgt. Danny Waldron)
Vicky McClure(DC Kate Fleming)
Thandie Newton(DCI Roz Huntley)
Kate Ashfield(Jools Gates)
Adrian Dunbar(Superintendent Ted Hastings)
Claire Keelan(DS Leah Janson)
Craig Parkinson(Matthew "Dot" Cottan)
Fiona Boylan(WPC Karen Larkin)
Martin Compston(DS Steve Arnott)
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