Celebrity Traitors fans believe the BBC may have accidentally given away a major spoiler before the new series even began.
The hit reality show returned with Alan Carr, Cat Burns and Jonathan Ross revealed as the first Traitors.
However eagle-eyed viewers think producers hinted at their identities weeks ago.
Fans on Reddit spotted that promotional photos released by the BBC showed each celebrity posed in front of a fireplace.
However, six contestants had a skull in their photo, including Carr, Burns and Ross, who were later named as the original Traitors.
One fan shared the theory online, writing: “It has every celebrity and their photographs on top of what looks to be a fireplace.
“The interesting thing is that six out of the 19 have a skull underneath, three of which are the Traitors selected in tonight's episode — is this a coincidence?
“Are the other three for recruited Traitors down the line?
If true, the other three celebrities with skulls in their images, Stephen Fry, Nick Mohammed and Kate Garraway, could be set to become Traitors later in the series.
During Thursday night’s show, viewers watched as the Traitors conducted their first murder in plain sight.
Singer Paloma Faith was revealed to be the murdered faithful in a dramatic hour-long episode that saw the competitors gather around the roundtable for the first time.
At the start of the latest instalment, presenter Claudia Winkleman announced at the breakfast table that one of the 19 contestants would be dead by the end of the day from a slow-release poison that had been planted on them the night before.
Dressed in their mourning attire, the celebrities followed Winkleman, 53 – who was on horseback, to the site of a cemetery.
The competitors carried three coffins into the graveyard and Winkleman told players they would be solving problems to identify who the traitors had chosen to lie in them – one of them being the murdered faithful.
Comedian Lucy Beaumont, YouTube star Niko Omilana and Faith, 44, were all made to lie in the coffins amid debate from the competitors on who the murdered faithful could be.
The celebrities decided it was Beaumont, 42, but Winkleman closed the door of Faith’s coffin – signalling her exit from the game.
The three traitors had been tasked with murdering someone in the castle during Wednesday night’s episode.
To kill Faith, Carr, 49, had to rub his hands on the pollen of a poisoned lily before touching her face.
On BBC Two’s The Celebrity Traitors: Uncloaked, Faith said: “I’d say the bright side of this is that there wasn’t enough time for anybody to think that I’m horrible person. So I think my reputation as being really lovely is intact, and it could have gone the other way.”
She also said that Carr, who had murdered her, had been sweating quite a lot.
“I did keep asking him why he was sweating so much. I remember just being like, I didn’t think that men got the menopause”, she joked.
“If the shoe was on the other foot I would not have touched Alan’s face, categorically. He had a choice, it was a choice and maybe it wasn’t the easiest option but it was the choice he made and I think it was not very nice,” she said.
Among the other celebrity competitors are broadcaster Kate Garraway, Welsh singer Charlotte Church, actor Sir Stephen Fry, retired Olympic diver Tom Daley and The Thursday Murder Club actress Celia Imrie.
