The Jed Mercurio hit crime thriller, which is due to return to screens in 2027 on BBC One and iPlayer, will start filming this spring as its iconic cast returns to set.
With Line Of Duty set to return after a five-year hiatus, Daily Mail reveals the questions and plot holes that creator Jed Mercurio must solve in order to redeem the show.
The popular BBC show wrapped up four years ago, and fans are desperate to know if there will ever be another instalment after their disappointment over the identity of H.
Directed by Doctor Who writer Joe Ahearne, the psychological thriller also stars Scottish actor Richard Rankin and EastEnders actor Navin Chowdhry, amongst others.
The Scottish actor starred in the BBC police drama which last aired in 2021 after almost a decade on screens - with fans seemingly desperate to see more of him.
Line Of Duty star Stephen Graham, 51, plays Matthew Collins, a former member of several fascist and neo-Nazi groups who later became an activist for anti-fascist campaigns, including Hope Not Hate.