Home and Away's Heather Fraser spooks Marilyn Chambers with break-in

 Her games continue.

Home and Away spoilers follow for UK viewers.

Home and Away schemer Heather Fraser steps up her attempts to cause trouble for Marilyn Chambers on UK screens next week.

Heather, who is Marilyn's long-lost daughter, has arrived in town with a twisted plan to seek revenge against the Summer Bay favourite.

In next week's episodes on Channel 5, Marilyn's closest friends continue to worry about why she is behaving so erratically.

Not wanting to share her secret, Marilyn is unable to explain why she has such a bad feeling about Heather's presence in the Bay.

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With Marilyn's loved ones concerned for her mental health, she even agrees to see a doctor to pacify them.

After an emotional day, Marilyn falls asleep on the couch just as Heather creeps into her home.

Heather sneaks around the house, placing an empty bottle of wine and glass next to Marilyn to make it look like she has been drinking.

She also places her baby photo on Marilyn, wanting to freak her out.

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The next morning, Marilyn wakes up and is shocked to find that things aren't as she left them.

Before Marilyn can clear up, Roo Stewart walks in and assumes that her friend has been drinking.

Later, at the Diner, Heather subtly gives away her guilt by slyly asking Marilyn how she slept.

Marilyn chooses to confide in Leah, admitting that she believes Heather must be her long-lost daughter.

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Leah is surprised as Marilyn recounts the details from her past, explaining that she once had an affair with a married man while working as his housekeeper.

Marilyn ended up pregnant during the relationship, but later felt pressured to give the baby away when her boss and his wife claimed they could provide a better upbringing.

Leah is put in a difficult position when Marilyn swears her to secrecy. Concerned for her friend, will Leah be able to keep quiet?

Home and Away airs these scenes on Monday, October 17 and Tuesday, October 18 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.