Line of Duty fans gripped by series 5 finale – but unconvinced by THAT "morse code" twist

What DI Dot Cottan was trying to tell us in his dying declaration was that there were FOUR Dots, that is – four 'H'-es or four 'Caddies'. And it all came down to a morse code hand signal, caught on police body-cam and finally noticed by DI Steve Arnott... from a still image.

“Now the frame it was frozen on during your interview made me spot something we’ve all missed," Steve (Martin Compston) said in the final moments of Line of Duty series five. "Look at Dot’s left hand. Dot was trying to tell us something before he lost consciousness.”

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Looking at Dot's tapping fingers, DI Kate Fleming (Vicky McClure) explains: "It’s Morse code. Dot dot dot dot.”

Steve adds: “The letter H in Morse code is four dots. ‘H’ is not an initial, it’s a clue. Four dots. Four caddies. Four police staff in league with organised crime.”

“Dot. Hilton. Gill," says Kate. "Plus one more.”

But fans were NOT fully convinced by the twist...

https://twitter.com/MrDavidEBrown/status/1125149378229035014

https://twitter.com/LiottaRia/status/1125300893589671937

https://twitter.com/stevenperkins/status/1125149608089407488

https://twitter.com/AmyxJean/status/1125308646303379456

Plus, there was this very fair point:

https://twitter.com/_MM1965_/status/1125279944865722369

Could he not have chosen a more... obvious way of communicating his message?

https://twitter.com/annieflores_/status/1125152609743114241

https://twitter.com/JasonMcIntosh88/status/1125159662515642368

https://twitter.com/markbatley/status/1125167240280780800

https://twitter.com/alicearnold1/status/1125152569247055872

And there were some people taking the micky...

https://twitter.com/PaulDMGibson/status/1125299208804864000

https://twitter.com/scottm/status/1125171088319754242

https://twitter.com/ewanandsmith/status/1125323570106830848

That said, some VERY SMART fans did work this out in advance, over on the Line of Duty Facebook page...

https://twitter.com/BBCOne/status/1125148528966283266

But overall, the finale was a BIG hit with Line of Duty fans:

https://twitter.com/pauldunphy/status/1125149369894883335

https://twitter.com/vicderbyshire/status/1125152187712196608

https://twitter.com/LiamODellUK/status/1125154268024066048

And everyone did love this ICONIC line, including McClure herself. Compston commented: "I can’t tell you how many times I ran this with Vicky McClure, not because she needed any practise she just loved saying it..."

https://twitter.com/harvatious82/status/1125151130101649409