Frankie Lewis' secret past will finally be explored on EastEnders as she drops a huge bombshell on Mick Carter next week.
Her odd actions in Walford have roused suspicion among some residents, while fans have been furiously speculating online.
The photographer's odd obsession with Ollie has rung alarm bells for some, especially after she confided in Tina about her own brother's death.
Next week, Tina ends up apologising to Frankie coming on too strong but when she asks her about the photos, the pair row and Frankie storms off.
But Mick continues to become increasingly suspicious of Frankie and when he realises that she's looking after Ollie he panics and rushes to the park.
Concerned, Mick pushes Frankie for answers about why she is hanging around his family.
Frankie finally drops the bombshell - that she believes that he is her dad.
This comes as another character is set to appear in Albert Square with links to Mick.
Actress Simone Lahbib announced earlier this month that she was joining the soap and her character is being kept under wraps, but it is rumoured that she will be playing Frankie's mum.
Speaking about joining the BBC soap, Simone said: "I’m thrilled to be joining EastEnders. I can’t say too much about who I am playing just yet, but it’s fair to say that she is set to have a lasting impact on the Carter’s and will test their strength as a family.
"It’s also been lovely to be reunited with Linda, Luisa and Kellie – it’s been a bit of a Bad Girls reunion!”
Meanwhile Executive Producer Jon Sen said: "We’re delighted to welcome Simone to Walford.
"Her character’s links to the Carter family will form part of an important new storyline for Mick in particular. It’s a story that we look forward to sharing with the audience - with its impact on the Carters set to be everlasting."
*EastEnders airs Mondays at 8.05pm, Tuesdays and Thursdays at 7.35pm and Fridays at 8.30pm on BBC One