Emmerdale airs the moment that fans have been waiting for next week as Charity Sharma finally discovers her husband Jai's scandalous secret.
Charity has been suspicious over Jai's strange behaviour for quite some time, but when she realises that Rachel Breckle and baby Archie are at the centre of the mystery, the penny finally drops in must-see episodes of the ITV soap.
Here, Emma Atkins - who plays Charity - teases the explosive moment that her character realises who Archie's father is.
What first gives Charity the impression that something is going on between Jai and Rachel?
"Charity's suspicions have been growing now for months, because she's seen Jai's behaviour and he's been acting extremely strangely. She's asked him whether he's had an affair or whether he needs to confess anything, but all he's ever done is profess his undying love the entire time.
"However, Charity isn't totally convinced that something isn't lurking in the background - some secret or something that he's just not telling her.
"Charity then just starts to sense things. It's a woman's intuition and she picks up on slight atmospheres in certain situations where Rachel happens to be present. Jai takes care of Rachel, and Charity's ears prick up every time that kind of situation arises."
What does Charity decide to do about it?
"Charity turns into a little detective and starts to clock it all and monitor it while she stays quiet and just thinks about it. She's aware that something is not right, and she needs to get to the bottom of it very quietly and discreetly."
Is Charity angry at this point?
"She's just bewildered! I think she's in a bit of shock. Every time these moments arise between Jai and Rachel, Charity is just very suspicious and intrigued.
"Charity still doesn't know the truth for sure, so she can't make any judgement on it until she discovers why Jai is suddenly taking an interest in Rachel. It seems that Jai is helping Rachel out with the cottage that she's renting, and Charity needs to find out why that is."
Charity tests Jai by urging him to sack Rachel. How does Jai react?
"Jai point blank refuses to go along with this and tells Charity to mind her own business. That puts Charity's nose out of joint. Jai is just in denial over the possibility that Charity could be getting closer to the truth. He's playing the game so well that he's verging on being a pathological liar!
"When Jai refuses to sack Rachel, Charity is just gobsmacked that Jai has spoken back to her. However, they are effectively getting rent from this mystery father of Rachel's baby, so Jai asks why he'd want to jeopardise a good working relationship with Rachel. It wouldn't be a good thing to do, so Jai stands his ground."
Then there's a moment where Charity thinks her worst fears have been confirmed. What can you tell us about that?
"Charity sees Jai's car outside Rachel's cottage and then hears what seems to be an argument of some kind between the two of them. She spies through the window and she's very bewildered. She doesn't know why those two would need a private conversation between them at Rachel's home.
"Then Charity sees Rachel suddenly thrusting baby Archie in Jai's arms. Immediately, the penny drops for Charity. It's an overwhelming shock and it takes her breath away. It's an open wound and it really is awful. It's the most horrendous way to find out and Charity doesn't know how to react. She goes into a panic, and I still don't know if she's fully believing it even then."
The viewers have waited a long time for this moment!
"I know! It's been great to play all this time, because I'm very aware that the audience know that Jai has sustained this lie for so long. People ask realistically how long someone can hold in that type of secret, because you'd think that eventually certain characters would start working it out. But Jai and Rachel have managed to keep this secret and it's got so monumentally enormous now. I think it'll be great for the audience to now see Charity's reaction and World War Three when it all kicks off!"
Charity then gets on Jai's laptop to play detective, doesn't she?
"Yes, and this is in Charity's true nature, really. She's a very good detective and brilliant at pretending that everything's fine. But underneath her attitude is, 'Let me get to work on this and I'll find the proof I need'. She hacks Jai's laptop and finds that the 'sent' box and 'trash' on his emails are empty. Jai has also deleted his internet browsing history, so there's no evidence of any emails going back and forth between him and Rachel.
"Charity almost feels very angry because there's no proof. She's left to wonder whether Jai has deleted the proof, or whether it's all in her imagination and there really was no proof to begin with. She has nothing to pin on them yet."
What happens next?
"Strangely enough, Charity confides in Declan, who really is enemy number one for Jai at the moment. Charity just wants to speak to someone who knows Jai very well, so she asks Declan whether he knows something or if he thinks Jai is capable.
"Declan is initially as bewildered as Charity when she explains the situation to him, but then he realises that Jai has also secretly been the father of Mia for years without anyone knowing, so he's capable of holding that sort of information for as long as he needs to. I think that confirms it in Charity's mind. He's done it before and he's capable of doing it again."
Then Charity's fears are totally confirmed with a final piece of proof…
"Yes, again Charity has this overwhelming feeling to confront both Jai and Rachel. As she's driving to the factory, Rachel is walking away. In Charity's mind it's, 'Who do I kill first?!' She chooses to go and see her husband first, because she wants to hear it from his mouth rather than anyone else's. Ideally she wants him to say that it's not true.
"Charity flies into the factory and is confronted with Jai holding Archie in his arms. She's absolutely frozen to the spot and can't move."
Was this exciting to film?
"It was brilliant! I've loved it all. It's been challenging as an actress because I've been pushed to play a range of emotions, and that's always exciting.
"Charity has never taken kindly to Rachel and finds her very irritating, so I've loved the scenes with Gemma Oaten too - with just how brazen Charity is in some of her putdowns to Rachel. Now it's clear that Rachel has been holding this secret and had the upper hand, so Charity will not like that…"
Can we expect to see Charity plan some revenge?
"With Charity, she could plan her vengeance very carefully and take a back seat. She'd think she has the time to do that now. But in many ways, Charity has slept with Declan so she's been just as bad, although they didn't have a child and hide it from the village for ages! That's the ultimate betrayal - it's gone much further than a one-night stand.
"Charity can't believe that Jai has led a double life, shamed her in this way and made a mockery of their entire marriage and their countless conversations about truth. They've always vowed to be so honest because that would get them through anything, even if they'd been a bit naughty. It's more the secrecy that's been a betrayal than the infidelity itself."
Have viewers constantly been asking you when Charity will find out?
"Yes, people are always asking when Charity will find out and I always say, 'Not for ages!' So I think people will be so shocked that it's happening now. I think it's a fabulous revelation episode. I myself was waiting for this moment so I think it's the right time for it to be unveiled.
Love many, trust few, always paddle your own canoe