Kelly Macdonald will star as guest lead in Line Of Duty season 6.
BBC One announced the news on their social channels this morning.
The Trainspotting star will play Detective Chief Inspector Joanne Davidson in the next season of the show, which is due to start filming next year.
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Davidson is the the senior investigating officer of an unsolved murder, "whose unconventional conduct raises suspicions at AC-12".
Series leads Martin Compston, Vicky McClure and Adrian Dunbar are also confirmed to return.
Compston and McClure - who play Steve Arnott and Kate Fleming - tweeted their delight at the news.
Another magnificent addition to the Line of Duty team. Said it before huge part of the show’s success is the phenomenal guest actors we’ve had. Kelly Macdonald will be up there with the best of them, what a talent what a career Buzzing to get the tape started #lineofduty6 https://t.co/QAh6xyxwc0
— martin compston (@martin_compston) November 19, 2019
LOD NEWS!!
Can’t wait to get back to work and a huge welcome to the phenomenal Kelly Macdonald!! @BBCOne @Line_of_duty @worldprods @jed_mercurio @martin_compston https://t.co/TXDlm2kMZQ— Vicky McClure (@Vicky_McClure) November 19, 2019
Meanwhile, series writer and showrunner Jed Mercurio wrote:
"Everyone involved in #LineofDuty is thrilled Kelly Macdonald is joining us for Series 6, playing AC-12’s most enigmatic adversary yet."
Last week, Jed tweeted a snap with the season 6 team at dinner "nervously awaiting the arrival of secret guest stars".
#LineofDuty Series 6 team @Vicky_McClure @martin_compston The Gaffer Adrian Dunbar nervously awaiting arrival of secret guest stars pic.twitter.com/wDRBnkUFAM
— Jed Mercurio (@jed_mercurio) November 13, 2019
Cannae beat a catch up with these two. Next time we’ll most likely be in uniform or at least Adrian will I’ll be in a new 3 piece https://t.co/95Uf93Octf pic.twitter.com/TpHjsZqk8R
— martin compston (@martin_compston) November 13, 2019
Series 5 of the police corruption drama aired from March 31st until May 5th this year.
Line of Duty's fifth season finale drew in over 9 million viewers.
