Line Of Duty viewers saw the funny side after spotting a spelling mistake in the latest episode of the crime drama.
Sunday's instalment of the BBC show saw officer John Corbett (Stephen Graham), who is deep undercover as a baddie, communicating with mysterious crime boss H.
One of the messages he received read: "Eastfield depot is definately high risk."
Fans could barely contain themselves about the word "definitely" being spelled incorrectly.
While a few people thought it was a production error, most divined that it was a very deliberate part of the script, to point out H has gaps in his spelling knowledge... and something that may possibly expose him.
"Any chance of some correct spelling on #LineOfDuty," asked one person on Twitter.
— David Joseph Roman (@DavidRoman_) April 14, 2019
One tweeted: "I think the most monstrous thing H has done, is not being able to spell 'definitely'."
— Jay Gujral (@JayGujral) April 14, 2019
"#LineOfDuty it’s 'definitely' not 'definAtely'," said another.
— Lil (@Reililly2912) April 14, 2019
"Whoever 'H' is, he deserves to get caught for his criminal spelling of definitely," said another,
— Sherry C (@SherryScribbles) April 14, 2019
“I can’t get over the spelling error in #LineOfDuty. If you put an 'a' in 'definitely' you are definitely a criminal," joked one person.
I can't get over the spelling error in #LineOfDuty. If you put an 'a' in 'definitely' you are definitely a criminal.
— SJ Kerridge (@MrsKerridge) April 14, 2019
"Was that spelling mistake a clue? #definately #definitely #LineOfDuty," posted one viewer.
— Claire Hounsham (@bouncyhounchy) April 14, 2019
"I feel the spelling of "definately" is going to be a crucial piece of evidence," said another.
I feel the spelling of "definately" is going to be a crucial piece of evidence. #LineOfDuty
— Suzanne Wheatley🇪🇺 (@suzyredred) April 14, 2019
Another said: "Tonight's #LineOfDuty was THE MOST TENSE THING EVER but that spelling error must be the clue, right?! #definitelydefinately."
— Rachel Rose (@RachElizRose) April 14, 2019
"Hastings can’t be H cos I refuse to believe the man who conducts himself to the LETTER OF THE LAW can’t spell 'definitely'," said another.
Hastings can’t be H cos I refuse to believe the man who conducts himself to the LETTER OF THE LAW can’t spell ‘definitely’ #LineOfDuty
— Laura Cullen (@Lo_Cull) April 14, 2019
So, has someone in AC-12 spelled the same word wrong in a previous episode? Are they about to do it again in an upcoming one, thus blowing their cover? Or is it just an error with the voice-to-text app and a total red herring?
We'll have to wait and see! What are your theories after episode three? Leave us a comment on our Facebook page @EntertainmentDailyFix and let us know what you think of this story.
Line Of Duty continues on BBC One.