Don't miss a thing by getting the latest from the Manchester Evening News sent direct to your inbox Line of Duty fans are eagerly awaiting the next instalment - and it's set to get even more complicated for AC-12.
Episode four left viewers of the BBC One cop drama on the edge of their seats on Sunday night and this weekend, a past face is returning.
And it's "not good news for the gaffer," says creator Jed Mercurio. Anna Maxwell Martin will reprise her role as Detective Chief Superintendent Patricia Carmichael, the BBC has confirmed.
For fans now searching their memory for when she was last around, Carmichael appeared in series five when she was brought in as an independent investigator amid doubts over the integrity of Superintendent Ted
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