In a stunning twist that could shake Summer Bay to its core, beloved local icon Alf Stewart finds himself facing the unthinkable — a DNA test that claims Roo Stewart is not his biological daughter.

According to a mysterious letter that lands on Alf’s doorstep, recent medical testing has revealed inconsistencies in Roo’s parentage. At first, Alf dismisses it as a cruel prank — but when he sees the official DNA lab seal, his heart sinks. The question that has haunted him ever since: could it really be true?

Roo, who has always shared her father’s fiery temper and fierce loyalty, is equally blindsided. “It’s ridiculous,” she reportedly says in tears. “Dad is my dad — nothing can change that.” But deep down, a whisper of doubt begins to grow.

As whispers spread around Summer Bay, old memories resurface — mysterious hospital visits, hushed conversations between Alf and Ailsa, and an envelope once hidden away in a locked drawer. Could this secret have been buried for decades?

The revelation sends shockwaves through the community. Marilyn is said to be the first to comfort Roo, but even she admits something feels “off.” Meanwhile, Irene urges Alf to retake the test, while John suggests someone might be trying to manipulate the Stewarts for money or revenge.

But who would want to destroy Alf’s family — and why now?

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Some fans speculate that the answer may lie in Alf’s past — a secret affair from his younger days, or perhaps a long-forgotten family connection in the Bay. Others believe it could be part of a larger conspiracy, linked to someone who has recently returned to town.

Whatever the truth, Alf’s famously steady world is crumbling. Friends say he’s been unusually quiet at the Surf Club, staring out at the ocean for hours, muttering under his breath, “After all these years… why now?”

The situation reaches a boiling point when Roo confronts Alf: “If you knew something — anything — tell me now!” The tension between them is palpable, and viewers can expect one of the most emotional confrontations in Home and Away history.

Producers have remained tight-lipped about where the storyline might lead, but insiders tease that “this is just the beginning.” Could a shocking confession from the past finally tear the Stewarts apart — or will the truth bring them closer than ever before?

One thing is certain: nothing in Summer Bay will ever be the same again.