By Deirde McKeever
The start date for the highly anticipated sixth series of Line of Duty has finally been confirmed by the BBC.
The first instalment of season six is set to air on BBC One on Sunday, March 21 at 9pm.
Vicky McClure, Adrian Dunbar and Martin Compston are all set to return as anti-corruption officers Kate Fleming, Ted Hastings and Steve Arnott, with Shalom Brune-Franklin making her debut on the show as DC Chloe Bishop.
Each series typically sees the AC-12 team focus their investigations on a corrupt officer within the police force, played by a guest star.
Kelly Macdonald (Boardwalk Empire, Trainspotting, No Country for Old Men) will appear as Detective Chief Inspector Joanne Davidson, the senior investigating officer on an unsolved murder case.
Previous guest leads have included Lennie James, Keeley Hawes, Thandie Newton and Stephen Graham.
Comprising seven weekly episodes, this will be the longest series yet for Jed Mercurio’s police drama.
The feature-length 90 minute final episode of season 5 drew 9.1 million viewers in the UK.