15 huge Home and Away spoilers for next week

 What's next in Summer Bay?

Next week on Home and Away, there's a stabbing at Salt as Mac's problems with PK escalate.

Elsewhere, the car-crash drama continues to affect Logan and Millie, while Nikau faces a big decision over his future.

Here's a full collection of 15 big moments coming up.

1. Mac discovers PK scammed her

Mac feels uncomfortable in PK's hotel room as he promises to forget about the $100,000 she supposedly owes him if she spends the night with him. Mac briefly considers it, but decides that she can't do it.

The next day, Mac tells Ziggy and Dean about what happened and how she didn't go through with PK's sickening demands. Dean gently breaks the news that the House can't lose in poker, despite what PK claimed, so she doesn't owe him anything.

Mac is horrified to realise that PK scammed her and she vows to take her revenge.

2. Rose becomes an ally for Felicity

Rose is aware that Felicity wants someone to discreetly look into PK's background for her. Cash won't do it without knowing why, but Felicity refused to trust Rose when she initially offered to help.

However, after spending an entire night worrying about Mac's whereabouts following the latest poker night, Felicity changes her mind and decides to take Rose up on the offer to help.

3. Mac wonders what to tell Logan

Mac tells Ziggy that she kissed PK in his hotel room before backing out of his deal. Ziggy suggests that Logan will be understanding if Mac tells him the truth about how PK tried to take advantage of her.

Mac approaches Logan and finally confides in him about the extent of her financial struggles. However, she later admits to Ziggy and Dean that she still couldn't tell Logan the truth about the illegal poker nights or PK.

4. Mac stands up to PK

Mac decides not to let PK know that she's onto him, letting him believe that she still thinks she owes him thousands. She decides to put on another poker night and promise to give PK her profits, but in reality she intends to keep them to pay off Salt's debts.

Mac pitches another VIP poker night to PK and promises to give him the buy-in takings. PK demands a much better deal for himself, insisting that he'd be running the event and would take all of the money earned. Mac refuses these terms and orders PK to leave.

5. Rose gives Felicity new information

Rose updates Felicity on her detective work, admitting that she didn't secure anything of note about PK's past. However, she did discover that PK's associate Nathan has a history of bankruptcy.

It turns out that someone once bailed Nathan out over his debts at a crucial point, as an investor had taken him to court and he was facing jail time. Nathan was saved from having to go to prison – and Rose suspects that PK was his last-minute saviour.

6. Nathan tries to warn Mac

Nathan continues to do PK's dirty work by visiting Mac at Salt. He urges her to do whatever PK wants.

Nathan warns Mac that PK is dangerous and not a man to be crossed. Mac refuses to listen and tells him to take his story elsewhere.

7. Tane is stabbed at Salt

Two thugs arrive at Salt when Mac and Dean are closing up for the night. They brandish a knife and demand cash from the till.

Mac and Dean are forced to kneel helplessly nearby as the intruders steal money and smash expensive bottles of alcohol, trashing the restaurant.

Oblivious to what's going on, Tane and Felicity come upstairs and unwittingly create a distraction. This gives Dean the chance to tackle one of the thugs, while Tane attacks the other.

The two intruders end up fleeing, but Felicity is horrified when she sees that Tane has been stabbed in the chaos.

8. Logan receives alarming news

Cash receives a call from the team who investigated Logan and Millie's recent car crash, as new evidence has emerged. Logan is called back in for questioning with Cash.

Cash quizzes Logan on how fast he was driving at the time of the incident. The implications of this aren't lost on Logan, who asks outright if he's under any suspicion.

Much to Logan's alarm, Cash confirms that the forensic evidence suggests he was speeding and could be to blame for the death of Millie's passenger Jo.

9. Xander continues to cross the line over Millie

Xander continues to visit Millie in hospital, wanting to support her following the crash. Jasmine becomes concerned over this, feeling that Xander is getting overly involved and that Millie should speak to a grief counsellor.

Jasmine becomes further embroiled in the Millie situation when Logan confides in her about how the police believe he caused the crash.

Jasmine passes this information onto Xander, but swears him to secrecy. Xander is struck by the knowledge that Millie is blaming herself for the death of her friend Jo when Logan was seemingly the person at fault.

10. Nikau and Xander save Millie's

Millie disappears from the hospital and heads to the beach, heading into the water fully clothed. Nikau is on beach patrol and shouts at her to come back, as a dangerous rip is forming.

When Millie ignores him and heads further into the water, Nikau is forced to rush into the water to rescue her. By the time Nikau reaches Millie, she is already unconscious and needs to be pulled to shore.

Xander witnesses the tail end of the dramatic rescue, just as Nikau realises that Millie is not breathing. Xander takes over with his paramedic skills, getting Millie breathing again.

11. Xander sparks further concern

Once Millie is breathing again, she explains her emotional distress by telling Xander how guilty she feels over Jo's death. Xander assures Millie that Logan was to blame for the crash rather than her.

Jasmine is horrified that Xander has betrayed her confidence like this and she confronts him, pointing out that he has overstepped the mark with Millie again.

12. Nikau reaches a crossroads

John is full of praise for Nikau following his heroic rescue of Millie. Although Nikau is grateful, he points out to Bella that his beach work is still voluntary and he needs to secure a paid position. Reluctantly, he hands in his resignation to John.

John is disappointed that his star lifesaver is being forced to leave, so he promises to put in an application to the local council for Nikau to become a paid lifeguard. Nikau is hugely grateful for the potential opportunity.

13. Theo shows off his singing talents

Theo knows that Chloe is avoiding the Parata house following her recent rows with Nikau. He tries to take Chloe's mind off things by arranging a romantic picnic for the two of them.

Theo brings Justin's guitar and serenades Chloe – a perfect excuse for Home and Away star Matt Evans to show off his singing talents after his previous stint on The Voice Australia.

14. Theo reveals more about his upsetting past

Leah and Justin are surprised by the revelation that Theo has musical talent. Theo recalls how it was discouraged by his abusive father Dimitri, who once smashed his guitar with an axe and burned it outside.

Justin wants to be far more encouraging of Theo's passion, so he hands over one of his old guitars and encourages him to play it anytime. Leah is touched when she returns home to find Theo and Justin singing together.

15. A decision is made over Martha's surgery

Martha decides to speak to the transplant coordinator again to see if she's well enough to undergo the operation. Roo is delighted and arranges a speedy appointment, as the coordinator had a cancellation for that afternoon.

After the latest meeting, Martha learns that she's in the clear and her surgery will take place in a week's time.

Home and Away airs weekdays at 1.15pm on Channel 5 and 6pm on 5STAR. First-look screenings air at 6.30pm on 5STAR and the show also streams on My5.