SPOILER ALERT
Fans recalled a blink-and-you-miss-it scene from the trailer which sees Kate standing next to Jo Davidson - which has yet to air on the show
After viewers learnt that Jo was related to Tommy Hunter, the fifth episode on Sunday ended with Kate in a showdown with Ryan Pilkington
Soon after the show aired, Twitter was flooded with wild reaction from fans, who demanded bosses show the next episode now
Fans were left reeling after fan favourite Ted Hastings tipped as being the elusive H again, leaving Ryan left in the standoff with DI Kate
SPOILER ALERT
Sunday s show saw new murdered character Lawrence Christopher introduced
DC Chloe Bishop explained he had been assaulted by a group of white youths in 2003 and later died in police custody while officers made monkey noises at him
The story paid tribute to the cases of Stephen Lawrence and Christopher Alder
Lawrence was murdered in a racially motivated attack in London in April 1993
While Alder died in a police cell on in 1998 after suffering a head injury
The results of Jo Davidson s DNA match were finally revealed during Sunday s very dramatic show - confirming that she is indeed related to Tommy Hunter.
And some eagle-eyed fans have now said they ve spotted a hidden post-it note which goes even further to claim the police officer is both his niece and daughter .
Several viewers took to Twitter after noticing the easy-to-miss clue and started to theorise how and why Jo [Kelly Macdonald] got involved with the OCG.
Shock development: Eagle-eyed viewers claimed they had discovered the real relationship between Jo Davidson (pictured) and Tommy Hunter after Sunday s Line of Duty episode
Line of Duty s bent prison officer Alison Merchant seems to have finally been caught by AC-12 and brought to justice.
In filming pictures, which were taken in September 2020 and show scenes yet to air in the current series, she is seen being arrested at gunpoint by armed officers.
Merchant (Maria Connolly) was first introduced in series two when she put feces in Linday Denton’s food and poured boiling water over her hand while in custody.
Caught at last? Line of Duty s bent prison officer Alison Merchant seems to have finally been found out by AC-12 after being seen held at gunpoint in filming snaps from the show
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He said: It s an absolute dream. It s mad to think what the show turned into when I was a little kid. It is mind-blowing, it s absolutely crazy. It s an amazing experience, I m very, very lucky.
And when Alison made a blunder asking: Is he actually going to kill anybody? , despite viewers having already witnessed the PC commit murder, Gregory replied: I mean, you ve seen what he s done before so anything is possible .
Mother of God! The actor, 23, has teased even more drama is in store for series six as he told Dermot O Leary and Alison Hammond: Anything is possible