Caleb Milligan is engulfed in revenge in Emmerdale- as he even risks alienating his own son in his mission to destroy Kim Tate.
Despite his determination, a new arrival could lead to the Dingle brother having to ditch his sinister plan.
Viewers of the ITV soap have watched on in disbelief as Nicky (Lewis Cope) struggles with his father Caleb's (William Ash) plot to take down Kim (Claire King) reports the Mirror.
However, the nanny may be forced to come clean about who he truly is after someone from his life outside of the village appears and threaten to unleash the huge secret.
The plot has intrigued fans online, with one suggesting another child of Caleb could turn up and ruin the revenge plan.
The viewer pointed out that when Nicky first arrived in the Dales he revealed to Kim that he had five siblings. and despite the rest of his cover story being false, this particular element could be true.
On an Emmerdale forum, they wrote: "How many kids do you think Caleb and his wife have when Nicky was interviewed for nanny position he said he had five siblings possibly part of his cover but could it be the truth."
"I'd like one of Calebs kids to be introduced and them not be on board with Caleb and Nicky plan."
Another fan pointed out: "I remember one time when Nicky and Caleb were talking Caleb mentioned him (Nicky) having a sister but at no other time has he mentioned her.
"Nicky keeps talking about Caleb saving the house for his mother so the daughter must not live with her so she’s over 18. What age is Nicky? So I’d say he has two children, a boy and a girl. I think Nicky’s five siblings is part of his lie."
A third Emmerdale fan said that the person who goes by 'Adrian' and has been brought up by Caleb, could in fact be a further clue that another relative is likely to arrive.
"Adrian is someone close to Caleb because they know about his ‘take Kim’s money plan’ but I wonder if they know about the Nicky-Gabby part," the fan said. "I would not be comfortable knowing a friend made his son sleep with a woman so he could get her money. That’s weird.
"I think Adrian is either Nicky’s mother or a fake name for someone known to us (viewers) as someone else. Adrian is a common boy’s name but it is also a girl’s name. They got clever not putting Nicky’s surname in the credits. So I wouldn’t be surprised if the mysterious Adrian is a woman."
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