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Line of Duty fans are sure they've spotted a 'secret bent copper' within DCI Jo Davidson's (Kelly Macdonald) team.
Since Sunday's episode, there has been some explosive revelations about DCI Davidson, including her links to deceased gang leader Tommy Hunter (with eagle-eyed armchair detectives realising that Jo is potentially both Tommy's niece and daughter).
But now, fans think they've spotted another clue pointing to another bent copper in Jo's team.
In Sunday's ep, it was revealed that murdered journalist Gail Vella had been looking into the death of Lawrence Christopher, a Black man who was victim of an unprovoked attack by a group of white thugs at a railway station.
Officer Chloe Bishop (played by Shalom Brune-Franklin) was discussing the case with Steve Arnott and Ted Hastings when she briefly showed them mugshots of the gang members.
And viewers at home recognise one person specifically - Detective Sergeant Chris Lomax.
"Seriously has no one else genuinely spotted this? Was the first thing I noticed," one person wrote on Twitter, alongside a screengrab of the image.
"Chris Lomax appears to be on the pin board at AC-12. Hmmm. #LineOfDuty," added another.
And another questioned: "Why is Chris Lomax on the board??? #LineOfDuty."
It's not the only shocking revelation to come from Sunday's ep.
During the episode, a DNA match revealed that Jo is related to Tommy Hunter. But some eagle-eyed fans have spotted a shocking detail about the truth behind their relations, after honing in on a post-it note, which seems to claim Jo is both the niece and daughter of Tommy.
Posting a screen grab of the post-it on Twitter, one person said the note read: "Jo Davidson's DNA has been identified at Farida Jatri's house. A match has been made to TOMMY HUNTER, stating she is both his niece and daughter."
We can't wait to see how this unravels in the next ep. Line Of Duty continues on Sundays at 9pm, on BBC One.
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