The new season of Line of Duty will begin filming in Belfast later this month, with Mrs Biggs star Daniel Mays playing AC-12’s “most dangerous adversary yet”.

Mays has been cast as Sergeant Danny Waldron, the highly proficient leader of an Armed Response Unit whose unpredictable behaviour is becoming a threat to colleagues and suspects.

The official synopsis for Season 3 reads: “When AC-12 are called in to investigate Danny’s conduct, even they could find themselves in the firing line.”

Daniel Mays commented: “I’m absolutely thrilled to be joining the unbelievably talented cast of Line of Duty series three. Jed Mercurio has once again delivered a thrilling and emotionally raw script, which I feel incredibly honoured to be a part of.”

Writer and creator Jed Mercurio added: “I’m deeply grateful to the BBC for giving me the opportunity to work on another series of Line of Duty. I’m very much looking forward to resuming a creative partnership with our regular cast, crew and production team and to working with the hugely talented Daniel Mays on this riveting new character.”

Returning cast members include Martin Compston as Detective Sergeant Steve Arnott, Vicky McClure as Detective Constable Kate Fleming and Adrian Dunbar as Superintendent Ted Hastings.

BBC Two commissioned a third and fourth season of Line Of Duty last April, after the second season concluded with an audience of 4.1 million viewers.

Are you looking forward to Season 3? Let us know below…