As revealed yesterday, the family of Zac MacGuire (Charlie Clausen) will soon be joining the soap and will be introduced in a storyline involving a cult.
Cassie Howarth has landed the role of Hannah Wilson, a "free spirit" who tries to extract her late sister's twins Oscar and Evelyn from their controlling father Ethan (Matt Minto).
As the story kicks off, viewers will see that Ethan - Zac's brother - has got Oscar and Evelyn involved in a mysterious organisation.
Hannah and Zac will team up to get back into the twins' lives again, but the persuasive nature of the cult and Ethan will be hard to fight.
Howarth commented: "Hannah has to now struggle to stay selfless and responsible, to make sure the twins have the life their mother wanted for them. She is a strong, determined woman who will fight fiercely for her family, but needs to feel loved as she has a fear of being alone."
Meanwhile, Jake Speer has been cast in the part of Oscar, who is feeling suspicious and uncomfortable following Ethan's decision to move the family into the cult's camp.
Oscar is well aware that something is wrong, and it's going to take all of his inner strength to maintain his individuality and survive.
Speer explained: "Being only 15, Oscar hasn't really seen much of the world. Spending a few years in a cult, he has missed out on a traditional teenage life and he's keen to get things back to normal… as normal as they can be anyway!
"Once the struggles of dealing with the cult and his family have been dealt with, I think Oscar is really keen to see what life is like in the Bay."
Finally, Philippa Northeast has joined the show as Evelyn, a "strong-willed" character who likes to make her feelings known.
Northeast said: "Evelyn believes strongly in the value of family, having lost her mother at an early age and witnessing her father try to deal with the repercussions. This, in turn, has strengthened the sibling bond she shares with Oscar, in whom she finds comfort and entertainment.
"Whilst Evelyn is a gentle character, she has a sharp sense of humour and is not afraid to vocalise her feelings, particularly if she feels that her opinions are being undervalued."
Home and Away launches this storyline next week on Network Seven in Australia and in November on Channel 5 in the UK.
Digital Spy Soap Scoop video - press play below to watch Amie Parker-Williams reveal gossip on some tragic news in Coronation Street, a horrific car crash in EastEnders, a surprise arrest in Emmerdale and a shocking allegation in Hollyoaks.