Line of Duty tonight returned after a two-year hiatus and it's safe to say its comeback episode was one for the books.
And while fans were gripped from start to finish, some eagle-eyed viewers spotted a major continuity error during a robbery scene.
Fans couldn't get enough of the action as new character Joanne Davidson - played by Kelly MacDonald - made her arrival.
But it seems as though a blunder was spotted by some, who branded it "obvious" during the first episode.
Fans watched the characters head to the robbery in two BMW vehicles, however one of the cars was then suddenly switched to an older version of the car.

After a few cutaways, the newer version of the car returned, leaving fans confused at what they had witnessed.
Rushing to Twitter, viewers conversed to clarify whether or not they all spotted the same error.
"Sorry what was with the BMW continuity error on #LineOfDuty ?? Screaming obvious," wrote one fan.
Another penned: "Can't be the only one who noticed the car change between shots?"


"Poor continuity there, an older BMW estate making a brief appearance," a third added, while a fourth wrote: "Line of Duty, was thinking, that's strange they're using a 10+ yo BMW E61 and then mysteriously it changes to a 2020 model with same plates".
Another agreed, writing: "When did the convoy suddenly ditch one of their BMW G20 three series model for an 5 series E60 and then back again?"
The show finally returned tonight and was set 18 months on from the finale of series five.

Kelly's new character Joanne joined the cast as the latest boss leading an important case, an unsolved murder, with Detective Inspector Kate Fleming on her team.
Some viewers immediately suspected the newcomer was hiding something, due to her suspicious behaviour.
The opening scenes were pretty dramatic too after a new lead, spurring on a high-speed chase with a number of police cars as they attempted to foil a robbery unfolding at the time.
*Line of Duty airs Sundays at 9pm on BBC One.
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