Emmerdale newcomer Caleb Miligan may have set his "revenge plan" in motion, according to viewers of the ITV soap.
Caleb made his arrival on Christmas Day despite long-lost brother Cain Dingle wanting him to stay away.
Since then he's got to know his family, amid Cain being in prison, and has meddled in the chaos surrounding young Kyle Winchester.
Kyle, aged 10, accidentally shot and killed Al Chapman in October, while his dad Cain took the blame and was sent to prison.
After recent scenes saw Kyle confess to the police what he had done, Caleb's involvement in encouraging him to confess has sparked suspicion.
In the fallout Caleb has been trying to get Cain's wife Moira and Kyle's mother Amy on side, wanting them to use his legal team to help Kyle.
With the youngster facing punishment for his crime, Caleb has claimed he wants to help him in any way that he can - and the latest episode saw him relay this to Cain.
Moira went with him to the prison, and told her husband that she had gone back on her word and accepted Caleb's legal help.
Cain was furious and lashed out, while Caleb remained happy with his actions.
But viewers are convinced his recent antics are all a sign of his real motive, and that he could be seeking revenge on Cain.
It was revealed when Caleb arrived that the brothers had first met 30 years ago when they were teens, but Cain told him to leave his family alone and lied their mother Faith was dead.
So when Caleb learned of Faith's actual death recently, he wanted answers and came looking for Cain.
While he's insisted he just wants to get to know his brother and the rest of his family, fans are convinced Caleb wants payback.
Taking to Twitter, viewers predicted he had set his plan in motion to destroy Cain, targeting his loved ones and Kyle to do so.
One viewer said: "After Cain was forced to go back to his cell after trying to attack his brother , is it me or did Caleb have an expression on his face like he got the reaction he wanted? I think Cain’s right and Caleb IS after revenge."
Another fan said: "Caleb in control, does Caleb want Cain's life?" as a third tweeted: "If Caleb is planning revenge, then it's nothing Cain Dingle doesn't deserve."
A fifth viewer said: "I think caleb deliberately tried to wind cain up...it worked. He's up to no good," while another commented: "Caleb needs Cain out of prison so he can enact whatever plan he has for him."
Emmerdale airs weeknights at 7:30pm on ITV1 and ITVX, with an hour-long episode on Thursdays.
