In Irene’s final episode — which airs on 19 August in Australia and 1 October in the UK — her loved ones, including Leah Patterson, her husband Justin Morgan, Alf Stewart and Marilyn Chambers, throw her a party before she leaves Summer Bay.

Expect a teary-eyed farewell, with speeches, inside jokes and a special performance by Theo Poulos and Justin.

But there’s one Summer Bay resident who’s struggling with Irene’s decision. John Palmer is in denial about Irene’s diagnosis, knowing that their time together is limited. Will he show up to the party?

“Our last scenes were incredibly difficult but rich,” McGranger said of filming her exit with her co-stars.

“[Leah star] Ada [Nicodemou] was sobbing and [John star] Shane [Withington], I think, is still in denial! They were the hardest to tell that I was leaving, but I know we’ll always be friends beyond Home And Away,” she said.

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“A lot of former co-stars reached out as well, which I’m so grateful for. Tempany Deckert [Selina], Raechelle Banno [Olivia], Courtney Miller [Bella], Christie Hayes [Kirsty], to name a few – it was lovely to hear from them.”

McGranger also reflected on the social impact of Irene’s story, calling it a “lifeline” for viewers.

“We think we’re just making a bit of telly, but I’ve realised that in some ways, this is a lifeline for people,” she said.

“Irene has had an impact on people, which is a huge honour and responsibility. I’m so grateful for everyone.”

More information about Alzheimer’s is available on the NHS and Alzheimer’s Society websites. Resources for readers in the US are available via the National Institutes of Health.