A new trailer previewing the sixth season of Line of Duty is not all it seems.
The explosive 70-second clip released by the BBC to whet the appetite of viewers ahead of season six of the police drama series also has a few hidden clues to the storyline.
Eagle-eyed viewers spotted some sneaky Easter eggs thrown into the trailer to test the audience’s own detective skills, while also hinting at what drama could be in store.
Or are they simply red herrings? Here’s what we know.
What does the Line of Duty season 6 trailer tell us?
The thrilling trailer, released on 9 March, gave viewers a glimpse of what to expect from the latest instalment from AC-12’s Ted Hastings, Steve Arnott and Kate Fleming.
It also gives viewers the chance to play along in a little game which starts at the two-second mark in the trailer when a fictional magazine cover displays a QR code.
It turns out that the QR code is real and if scanned on a phone will take the participant to a letter from chief constable Philip Osborne addressed to DCC Andrea Wise.
The letter reads: “I think it is high time we had a much closer look at AC-12.
“I'm beginning to question whether this department is fit for purpose especially under its current – and let's be frank – extremely difficult leadership.
“Ted Hastings doesn't lead investigations, more commit to a crusade. He is oblivious to the politics of the situation which creates problems for me and problems for you because policing is politics.
“And should AC-12 even be led by someone who himself has been accused of corruption?
“The question is what to do next?
“Is it time for a leadership change? What role should Ted Hastings have in this organisation – if any at all?”
And that’s not all.
In the letter there is a link to a pharmacy stamp for DS Arnott.
One of the medicines prescribed comes with an addiction warning and there is a message in morse code including the word “dot” above the prescriber’s signature.
This coded message leads to a short preview where it appears Arnott is questioning his future - so could this be the end of the road for AC-12 as we know it?!
Well there’s only one way to find out.
What is the Line of Duty season 6 release date?
Line of Duty season six will be released on Sunday 21 March at 9pm on BBC One.
The last three seasons have aired from the end of March through April and into May, with each of the six episodes released a week apart.
Filming began in 2020 but was briefly paused due to the coronavirus pandemic, though it started up again in September and concluded in late November.
Who is in the cast of Line of Duty season 6?
They will be joined by Glasgow’s Kelly Macdonald as detective chief inspector Joanne Davidson for the sixth season of the smash-hit drama series.