Home and Away's Marilyn confronts Heather over baby photo mystery

 The truth is revealed.

Home and Away spoilers follow for UK viewers.

Home and Away favourite Marilyn Chambers receives an unsettling delivery on UK screens next week.

Marilyn is about to take centre stage in a huge new storyline following the introduction of Summer Bay newcomer Heather Fraser, who is hiding a secret.

In next week's episodes on Channel 5, Marilyn grows increasingly suspicious that Heather isn't who she says she is.

When Heather seems unprepared for her latest tutoring session with Roo Stewart, Marilyn wonders what could be distracting her from study.

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Heather makes out that she's simply struggling to settle into the Bay, which leaves Roo sympathetic towards her.

Marilyn isn't so convinced and soon finds herself at odds with Roo over the situation.

Roo tries to make Marilyn warm towards the Bay's newest arrival, explaining that Heather was once forced to give up a baby after having an affair with a married man.

Mysteriously, this only throws Marilyn into further turmoil as she's visibly shaken by the upsetting tale that Heather has shared with Roo.

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Later, Marilyn finds a photograph of a newborn baby on her doorstep, along with a cryptic note: "Guess who?"

Marilyn storms off to confront Heather at her caravan, accusing her of leaving the photograph there.

When Heather continues to feign innocence, their row is interrupted by Nikau Parata and Roo Stewart.

Roo pulls Marilyn away and apologises to Heather for her friend's seemingly-erratic behaviour. Roo pushes Marilyn for answers, but she refuses to explain herself.

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Once alone in her caravan again, Heather opens a box and pulls out her birth certificate, which lists her birth mother as Marilyn Chambers.

What are the intentions of Marilyn's long-lost daughter as she continues to cause trouble in Summer Bay?

Home and Away airs these scenes on Wednesday, October 12 and Thursday, October 13 at 1.45pm on Channel 5 and 6pm on 5STAR. First-look screenings air at 6.30pm on 5STAR and the show also streams on My5.

Selected classic episodes are available via Amazon Prime Video in the UK.