Emmerdale spoilers tease a big discovery about Meena Jutla on the ITV soap next week.
Her sister Manpreet Sharma unearths that the character is meddling with villager Ethan Anderson's life again, as he considers reaching out to his estranged mother.
Manpreet has no idea that her sister is a serial killer, having murdered Leanna Cavanagh, Andrea Tate and Ben Tucker, as well as a mystery friend named Nadine.
Amid fears of another murder this Christmas, with Dawn Taylor and Billy Fletcher at risk, Manpreet realises her sister is up to no good.
Earlier this year fans may recall Ethan made contact with his missing mother by phone, unaware it was Meena who was impersonating her and sending the messages.
Ethan was distraught when his 'mum' didn't want to see him, when in fact Manpreet had learned of her sister's antics and stopped her games.
Since then, Ethan's real mum has made contact and wants to see him - while denying she had sent any messages to her son.
So when Manpreet finds out next week that Meena has advised Ethan against meeting his mother, she is left furious.
She immediately confronts Meena, as Ethan says she urged him not to make contact with his mum Esme.
Accusing Meena of messing with Ethan's happiness, she questions her behaviour leading to her blaming Manpreet.
With Manpreet knowing what Meena did and lying, while also encouraging her to end the messages, Meena suggests she is as much to blame.
Manpreet and Ethan's father Charles, her ex, almost rekindled their romance recently, but Andrea's death thwarted things.
The pair continue to battle with their feelings for each other, and next week Charles considers giving things another go.
But Manpreet is struggling with her secret, and tells Meena they have to let Ethan get to know his mum - but her volatile sister brings the conversation to an end.
Manpreet is annoyed and encourages Ethan to speak to Esme, with Charles grateful for her help - not knowing about the messages.
As the pair get closer she leans in for a kiss only for him to reject her, telling her now is not the time for romance.
He soon changes his mind though, admitting he has never stopped loving her - before giving her hope they could reunite.
Charles asks her to agree to no secrets between them, but will she end up telling him the truth about Meena?
Emmerdale airs weeknights at 7pm on ITV, with an extra episode at 8pm on Thursdays.