Line of Duty

AC-12 turn their spotlight on DI Lindsay Denton, the officer in charge of a police convoy that was brutally ambushed, leaving three officers dead.

Following the tragedy at the hospital, Kate Fleming goes undercover in Denton's Missing Persons Unit.

Denied bail and targeted in prison, a desperate DI Denton tells Kate her theory of why she is being framed.

DI Denton suffers a violent attack in prison and Deputy Chief Constable Dryden shrugs off the allegations against him.

Lindsay fights for her life against troubling details of a vicious conspiracy while Hastings comes under pressure to arrest his senior officer.

AC-12 close in on their targets and Steve appears convinced of Lindsay Denton's innocence, but Kate is determined to prove that she had a role in the ambush.