EastEnders viewers spotted something very odd on Wednesday night, when a past scene was replayed on the BBC soap and it looked a little different.
Viewers were quick to question if the show had made a blunder, after something about the scene from a year ago had changed.
The scene in question was the moment Suki Panesar was attacked by Ranveer Gulati, leaving them both on the ground.
It had been recorded by a camera after Suki planned to trap Ranveer into signing a business deal, only for him to try to force her into sleeping with him.
Suki remains unaware that she did not kill Ranveer after hitting him over the head during a struggle, and it was actually his 'son' Ravi Gulati who committed the crime when she'd left the room.
Ranveer had woken up resulting in Ravi silencing him, before telling Suki she'd killed him - with her still believing this now.
The footage had been edited to cover up Ravi's crime, and in the latest episode of the BBC soap Suki found it amid her hopes to free her son Kheerat Panesar.
Kheerat is in prison after taking the blame for the crime to save his mother, while Ravi has continued to keep his secret.
But it was something that happened when the moment was replayed to Suki on Wednesday night that left viewers baffled.
As Suki watched the moment she hit Ranveer after being attacked, she was shown wearing a purple or blue dress.
Fans quickly remembered though that at the time, Suki was wearing a bright pink frock, not a blue or purple one.
While some fans wondered if it was the lighting or an illusion that had made the pink dress change colour, others wondered if Suki's outfit had been changed when filming the footage for the CCTV.
Other viewers came up with another theory though, questioning if the soap had deliberately edited the scene to make the dress blue.
Suki is soon to feature in huge Christmas scenes with five other female characters, when a male character is killed off on Christmas Day.
The moment was teased in a flashforward scene in February, and in that very scene Suki is wearing a blue dress - one that looks similar to the new CCTV scene.
Taking to Twitter, some fans guessed that it was a major clue that perhaps gave away Suki's real link to the events that happen on Christmas Day.
Believing it had to be intentional and to do with the death, fans questioned if her link to the twist was tied in to Ravi or Ranveer, or even her husband Nish Panesar.
One viewer tweeted: "Tonight’s episode showed cctv footage of when Suki hit Ranveer in self defence but weirdly Suki is wearing a blue dress when in reality, she was wearing a pink dress. We know “Suki’s colour” in the six is blue, could this be deliberate and mean something bigger?"
Another tweeted: "suki in the blue dress instead of pink has to be a clue right?"
A third viewer said: "NO WHY IS SUKI'S DRESS BLUE??? THAT'S HER COLOUR IN THE SIX, BUT WHEN SHE HIT RANVEER, SHE WAS WEARING PINK!!! WHAT IS GOING ON?! THIS CAN'T BE A COINCIDENCE OR MISTAKE. THEY'VE DONE IT ON PURPOSE, WHY?! IT MAKES NO SENSE!!!"
But some fans were not convinced, with one writing: "The blue dress thing, I think it's just the lighting, otherwise it's bad continuity. They've dropped hints elsewhere but that's not one of them."
Another said: "It's purple and probably lighting."
EastEnders airs Mondays to Thursdays at 7:30pm on BBC One and BBC iPlayer.
