Brax hits rock bottom when his youngest brother Casey (Lincoln Younes) is sent to jail for arson in scenes which air in Australia later this month. However, in a twist, Brax soon finds himself receiving comfort from Casey's lawyer Hayley, played by Alyssa McClelland.
Peacocke told TV Week: "Hayley is quite cunning, because she knows he's in a bad place. She sees the opportunity to go in when he's at his low point."
Charlie (Esther Anderson) receives a shock when she witnesses the pair kissing as she had been considering whether to reunite with Brax.
"She thinks Brax has moved on and there's nothing to stop him from moving on," Peacocke confirmed.
The actor also promised that there will be an air of intrigue surrounding Hayley and her intentions in the upcoming episodes.
Peacocke said: "There are some encounters for the audience to look forward to, and there's a bit of a mystery behind Hayley and why she's in the Bay."
Home and Away airs these scenes next week in Australia and in the winter on Channel 5 in the UK.
> Home and Away Lincoln Younes teases Casey police twist
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Watch the latest Home and Away Braxton promo from Australia below: