EastEnders spoilers have revealed Mick Carter will grow suspicious, about newcomer Frankie Lewis' increasing interest in his young son Ollie Carter.
Fans were left confused and alarmed earlier this month, when Frankie seemed keen to spend time with the little one.
Not only that, but she was seen watching him and even taking photos of the five year old and the Carters.
Next week, she does this again only to be spotted by his father Mick, played by actor Danny Dyer.
He picks up the camera and looks through the images, unsure why Frankie has taken them especially when he sees how many there are.
Mick then advises her to get rid of them, as Ollie's mother Linda Carter might not like it.
His unease clear, will Frankie do as he says?
Later on in the week, she worries him further as she starts asking questions about his family.
Frankie is trying to convince Kathy Beale to give her a full-time job at The Prince Albert.
Tasked with increasing the sales on a Friday night, she plans a Drag Bingo and asks Tina Carter and her brother Mick to help her behind the bar.
The move only leaves him more suspicious, and then she starts asking questions about him and the Carters.
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But what is she up to, and is she asking for a reason?
Viewers believe she is somehow linked to Mick, and could even be his secret daughter in a twist.
Others are more convinced her link is to Ollie, after she told Tina about losing her younger brother a while ago.
Theories include Frankie becoming obsessed with him, because he may be similar to her lost sibling.
Meanwhile, another theory questioned if somehow she could be Ollie's real mother.
EastEnders airs Mondays at 8:05pm, Tuesdays and Thursdays at 7:35pm, and Fridays at 8:30pm on BBC One.