Roo Stewart’s unexplained disappearance has quickly become one of Home and Away’s biggest mysteries — but the question may no longer be simply where she is.
A mysterious man has already appeared to play a crucial role in keeping Alf from realising something was wrong. And as the search for Roo takes an increasingly worrying turn, viewers have begun looking beyond the obvious clues.
Who is the man? Why was Roo chosen? And could her disappearance be connected to a much bigger Summer Bay storyline?
For now, the show is keeping those answers hidden. But several theories are beginning to stand out.
Roo Was Supposed to Be Back in Summer Bay
Roo had been away visiting her mother in Merimbula and was expected to return to Summer Bay.
When she failed to arrive, Alf initially had little reason to assume the worst.
Then a message appeared on Roo’s phone explaining that she was having trouble with her car.
On the surface, it provided a simple explanation for the delay.
There was just one major problem: Roo had not sent it.
Instead, viewers were shown a mysterious man using her phone, immediately raising the possibility that someone was deliberately trying to stop Alf from becoming suspicious.
That detail could prove important.
Whoever sent the message seemingly understood that Roo’s absence would soon be noticed — and knew that a believable explanation might buy more time.
Then Roo’s Car Changed Everything
As the days passed without Roo returning, Alf’s concerns grew.
Justin also questioned the explanation about the car, noting that he regularly services Roo’s vehicle and struggling to understand what mechanical problem could have kept her away for so long.
Eventually, Alf reported his daughter missing.
Sergeant David Langham’s search then led him to an isolated bush road, where a burnt-out vehicle was discovered.
The registration belonged to Roo.
David’s concern deepened further after he approached the rear of the vehicle and looked inside the boot, with the discovery leaving him fearing the worst.
The show has deliberately stopped short of answering the most important question: what exactly has happened to Roo?
But the combination of the false message and the condition of her car suggests her disappearance may not have been accidental.
The Biggest Question May Be: Why Roo?
If someone deliberately prevented Roo from returning to Summer Bay, one question immediately becomes difficult to ignore.
Why her?
Roo has spent decades at the heart of the Stewart family, but the current storyline has yet to reveal an obvious reason why she would suddenly become someone’s target.
That has led viewers to wonder whether Roo herself may not be the ultimate focus.
Could she instead be connected to someone else the mysterious man wants to reach?
Could her disappearance be intended to draw Alf, the police or another Summer Bay resident into a larger situation?
Or could the answer lie in a part of Roo’s past that has not been revisited for years?
None of those possibilities has been confirmed, but they help explain why several very different fan theories have now emerged.
Could Beau Be Behind It?
One of the most frequently discussed theories points to Beau.
Beau caused serious trouble for Harper earlier this year, with Harper becoming increasingly frightened after he disappeared while police were attempting to locate him.
She had previously made a statement that could have led to him being put behind bars, while Beau’s behaviour became an escalating threat hanging over her life.
More recent reports indicated he had ended up in custody after breaching the AVO Harper had taken out against him.
Even so, some viewers now believe Beau could somehow be connected to Roo’s disappearance.
The theory becomes particularly interesting if Roo is not his real target.
If Beau were attempting to return to Harper or Summer Bay without immediately drawing attention to himself, Roo’s disappearance could theoretically become part of a much larger plan.
But there is currently no confirmation from Home and Away that Beau has escaped custody or that he is the mysterious man.
For now, it remains a fan theory.
Another Theory Goes Much Further Back
Other viewers have looked much deeper into the Stewart family’s history.
One name being raised is Kieran Baldivis — Roo’s half-brother.
Kieran entered the Stewart family’s life after it was revealed that Martha had a son Alf and Roo previously knew nothing about.
His arrival was complicated from the beginning.
The character had struggled with alcohol and carried a history of violent behaviour, while Alf remained deeply suspicious of him.
Roo initially tried to give her newly discovered brother a chance, even as tensions inside the family continued to grow.
Kieran eventually became increasingly volatile, and his troubled relationship with the Stewarts became one of the family’s darker chapters.
That history has now led some viewers to wonder whether bringing Kieran back could turn Roo’s disappearance into something far more personal.
There is, however, an important difference between an interesting theory and evidence.
Nothing currently confirms that actor Rick Donald has returned to the series or that Kieran is involved in Roo’s disappearance.
Still, if the writers wanted this mystery to reach directly into the Stewart family’s past, Kieran would provide an established connection.
Could the Mysterious Man Be Someone We Haven’t Properly Met Yet?
There is another possibility — and perhaps the simplest one.
The man could be someone viewers are not expected to recognise yet.
That would allow Home and Away to slowly reveal both his identity and his reason for choosing Roo as the storyline develops.
A further name, “Phil,” has also appeared in online speculation surrounding the mystery.
However, there is currently little reliable information connecting any character by that name to Roo’s disappearance, so this theory remains particularly uncertain.
Rather than pointing clearly toward one familiar villain, the show may deliberately be encouraging viewers to search Roo’s history while preparing to introduce an entirely different explanation.
The Fake Message Could Be the Most Important Clue
Of all the clues revealed so far, the message sent from Roo’s phone may ultimately say the most about the person behind her disappearance.
It was not simply an attempt to take Roo away.
Someone apparently wanted the people waiting for her to believe she was safe.
That required a degree of planning.
The mysterious man had access to Roo’s phone, knew she was expected somewhere and understood that a mundane explanation such as car trouble might temporarily prevent questions being asked.
Then, days later, her burnt-out car was discovered.
Whether those details point toward Beau, someone connected to Roo’s family history or an entirely new character remains unknown.
But together, they suggest there could be far more happening than a random disappearance.
Is Roo Really the Centre of the Mystery?
That may ultimately be the twist.
Roo appears to be at the centre of the storyline, but her disappearance could instead be the first move in something aimed at somebody else.
Alf’s desperate search has already pulled the Stewart family into the mystery, while David is now involved through the police investigation.
If the mysterious man has a connection to another resident of Summer Bay, Roo could simply be the person whose disappearance forces everyone else into position.
For now, viewers have only fragments of the answer.
A message Roo never sent.
A mysterious man with her phone.
A car discovered far from home.
And one question that may matter more than any other:
Why Roo?
Until Home and Away reveals that answer, Beau and Kieran remain two of the most intriguing possibilities — but the biggest twist may be that viewers have not yet met the real person behind it at all.
Source: Now To Love / TV WEEK, October 26 and October 29, 2026; earlier Home and Away coverage of Beau and Kieran.